Develop Bugs

[Q] Notification drawer lag

I have a lag issue with my device and its starting to drive me crazy. Lol.. But anyway when I'm using the touchwiz launcher and drop down the notification drawer while on the home screen the animation is really choppy and laggy. But as soon as I open an app like gmail or even settings menu the choppiness is gone. The home screen lag will go away if I use another launcher as well like launcher pro or go launcher. But I prefer the twlauncher.
Another strange thing is the twlauncher has no home screen lag when using cm7 so I know the device is capable. Just was wondering if anyone else has this issue or found a way around it, thanks!
Just wanted to note that this didn't occur on my epic touch 4g

Zoen22 said:
I have a lag issue with my device and its starting to drive me crazy. Lol.. But anyway when I'm using the touchwiz launcher and drop down the notification drawer while on the home screen the animation is really choppy and laggy. But as soon as I open an app like gmail or even settings menu the choppiness is gone. The home screen lag will go away if I use another launcher as well like launcher pro or go launcher. But I prefer the twlauncher.
Another strange thing is the twlauncher has no home screen lag when using cm7 so I know the device is capable. Just was wondering if anyone else has this issue or found a way around it, thanks!
Just wanted to note that this didn't occur on my epic touch 4g
Click to expand...
Click to collapse
Just root the device and flash a rom, I think Samsung didn't spend enough time optimizing the Snapdragon with the Touchwiz skin.

Laggy launcher & homescreen transitions

Anyone else notice that it gets a little jittery when you're on the app drawer and you hit the home key? When the icons do that zoom out, it's not as smooth as the rest of the phone usually is. It's minor, I know, but I'm starting to think maybe Apple has a patent on a smooth UI (that's a joke).
I've also noticed bad performance with live wallpapers on the home screens, it's really rough with most live wallpapers. I previously had the Epic 4G Touch (Galaxy S 2) and it was ALWAYS smooth as butter, even with live wallpapers... when running the stock TouchWiz UI. So while the processor/gpu in the GS2 is probably better, it seems to me like it's more of a software issue.
It doesn't bother me enough to want to go back to the Galaxy S II, mind you, physically this phone is superior and I sure love me some vanilla ICS... but are any of you noticing this with custom ROMs as well?
EDIT: I wanted to add, I've tried Nova & Apex, and I didn't notice a difference in this regard.

When you tried Apex did you turn on the setting that saves your home screen in memory? I have noticed almost zero lag with this option selected

BMWPower06 said:
When you tried Apex did you turn on the setting that saves your home screen in memory? I have noticed almost zero lag with this option selected
Click to expand...
Click to collapse
It seems to help just a little with live wallpapers when sliding between homescreens, but it has zero effect on how jittery it is when you're in the app drawer and you hit the home button (when the icons "fly away" and you go back to the home screen).

I dont have any App drawer to Home lag.
Every stock LWP except "Phase Beam" lags afaik. Kinda sucks but how it is.

Ryjabo said:
Anyone else notice that it gets a little jittery when you're on the app drawer and you hit the home key? When the icons do that zoom out, it's not as smooth as the rest of the phone usually is. It's minor, I know, but I'm starting to think maybe Apple has a patent on a smooth UI (that's a joke).
I've also noticed bad performance with live wallpapers on the home screens, it's really rough with most live wallpapers. I previously had the Epic 4G Touch (Galaxy S 2) and it was ALWAYS smooth as butter, even with live wallpapers... when running the stock TouchWiz UI. So while the processor/gpu in the GS2 is probably better, it seems to me like it's more of a software issue.
It doesn't bother me enough to want to go back to the Galaxy S II, mind you, physically this phone is superior and I sure love me some vanilla ICS... but are any of you noticing this with custom ROMs as well?
EDIT: I wanted to add, I've tried Nova & Apex, and I didn't notice a difference in this regard.
Click to expand...
Click to collapse
I will confirm that the zoom out animation when hitting home from the app drawer is not as smooth as it should be. My old Samsung Fascinate is on AOKP and the transition out of the app drawer is actually smoother than my Nexus. I wouldn't call it lag but it's definitely not as smooth as it should be.

martonikaj said:
Every stock LWP except "Phase Beam" lags afaik. Kinda sucks but how it is.
Click to expand...
Click to collapse
On this phone, yes. On the Galaxy S2... no.

To contradict the apple joke, I have an iPod touch 4th Gen and my friend has an iPhone 4S, both of them get laggy transitions after a while, especially after opening a few apps. I'm on stock and have zero lag. Nova had less then apex from what I've used.
Sent from my Galaxy Nexus using XDA

Same for me ..

The live wallpapers all lag, but its gotta be a software issue not yet fixed.
The app drawer fly away animation is weird, cause I do see that stutter sometimes. But then a lot of the time its smooth. Not sure what that's all about. But I'm of the opinion that everything can be smoothed with a software tweak.

Ryjabo said:
It seems to help just a little with live wallpapers when sliding between homescreens, but it has zero effect on how jittery it is when you're in the app drawer and you hit the home button (when the icons "fly away" and you go back to the home screen).
Click to expand...
Click to collapse
You found the cause

Ryjabo said:
On this phone, yes. On the Galaxy S2... no.
Click to expand...
Click to collapse
Well, feel free to switch then. Not every phone is as perfect as the GS2.

adrynalyne said:
You found the cause
Click to expand...
Click to collapse
No... because I said: It seems to help just a little with live wallpapers when sliding between homescreens, but it has zero effect on how jittery it is when you're in the app drawer and you hit the home button (when the icons "fly away" and you go back to the home screen).
adrynalyne said:
Well, feel free to switch then. Not every phone is as perfect as the GS2.
Click to expand...
Click to collapse
These forums exist for many reasons including discussing problems, right? This is an obvious problem and I'd like to discuss it. Thanks.
Your solution here is to live with it or get a different phone and you've been "thanked" at least a couple of times for it. That's super constructive. Do you honestly not understand why I brought up the Galaxy S2 as a comparison, or do I need to draw pictures?
Am I the only one that finds it frustrating that Google's flagship device doesn't perform as well as other devices in something as simple as homescreen transitions or opening/closing the app drawer?

IMO its the soft key glow animations causing the "lag". There's a mod which I have done which shortens the length of the glow animations, its basically eliminated the lag you are talking about.
Sent from my Galaxy Nexus using xda premium

I find it funny that my Nexus S runs all the Lwp perfectly but my gnex doesn't.
Sent from my Galaxy Nexus

FrostyF7 said:
I find it funny that my Nexus S runs all the Lwp perfectly but my gnex doesn't.
Click to expand...
Click to collapse
You spelled "ridiculous" wrong.

rob151515 said:
IMO its the soft key glow animations causing the "lag". There's a mod which I have done which shortens the length of the glow animations, its basically eliminated the lag you are talking about.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
you're right. set them "off" within AOKP ROM settings and the appdrawer is smoother now when closing

Ryjabo said:
Am I the only one that finds it frustrating that Google's flagship device doesn't perform as well as other devices in something as simple as homescreen transitions or opening/closing the app drawer?
Click to expand...
Click to collapse
Nope it drives me crazy too. I have started using Apex launcher with the widgets tab hidden so its just apps and its better but still jitters a bit. I even get jitters and lag on the lockscreen. I turned auto brightness off which helped but from time to time it lags crazy if i swipe fast.
Its not good enough.
My friend and my wifes best friend have nexus s's and they perform a lot better than my Gnex with the stock launcher which is just embarrising.
Ryjabo said:
You spelled "ridiculous" wrong.
Click to expand...
Click to collapse
this made me literally LOL.

Ryjabo said:
No... because I said: It seems to help just a little with live wallpapers when sliding between homescreens, but it has zero effect on how jittery it is when you're in the app drawer and you hit the home button (when the icons "fly away" and you go back to the home screen).
These forums exist for many reasons including discussing problems, right? This is an obvious problem and I'd like to discuss it. Thanks.
Your solution here is to live with it or get a different phone and you've been "thanked" at least a couple of times for it. That's super constructive. Do you honestly not understand why I brought up the Galaxy S2 as a comparison, or do I need to draw pictures?
Am I the only one that finds it frustrating that Google's flagship device doesn't perform as well as other devices in something as simple as homescreen transitions or opening/closing the app drawer?
Click to expand...
Click to collapse
So...what did you accomplish by bringing up the GS2?
Did you...fix your problem?
Did you...make yourself feel better?
We all get it, the GS2 doesn't lag on live walls. Well, guess what? This one does, like most android devices. This is a fact, and it may or may not get fixed. So really, bringing the GS2 into any conversation regarding the Galaxy Nexus is NOT constructive. Comparing the GS2 to this device is going to be met with irritated folks because we have been listening to it for the last 6 months. I am sure I am not speaking only for myself when I say I am sick and tired of it.
This is not a PC. We can't just go throw extra parts in it, and upgrade the hardware. Therefore, the only solution to your problem is another device. I am sorry if it offends you, but it is a fact. Take the good with the bad, or find another device that is better for you. This is how the smartphone world works.

[VIDEO] For those of you complaining about lag on 4.2.2

here you go.
http://www.youtube.com/watch?v=7ZpdhpTEX6o&feature=youtu.be
rom: latest purity
kernel: ak kernel, rubix
nova launcher with "faster than light" animations and all other animations turned down to 0.5x.

A video with no details on how to help those people who lag on 4.2.2 doesn't really do anything for them.

magozz said:
A video with no details on how to help those people who lag on 4.2.2 doesn't really do anything for them.
Click to expand...
Click to collapse
edited op. i had lag on 4.2.2 with the stock launcher but once i installed nova and changed all the animation speeds everything changed to bullet speed.

Thanks for the video.
No offense but I don't think we're talking about the same sort of "lag". The one we're talking about is a system bug that came with 4.2.2. causes frame rates slowdown when scrolling between homescreens, lockscreens and in recents. When it appears you can even notice it while switching between the tabs in notification pulldown (gets really choppy). Problem appears randomly, sometimes after couple of hours, sometimes after a day or two. It cannot be eliminated by simple launcher change and turning animations off.
Turning animations off makes scrolling look faster indeed but it kills fluidity on the other hand which I really really don't like.

forever_lol said:
Thanks for the video.
No offense but I don't think we're talking about the same sort of "lag". The one we're talking about is a system bug that came with 4.2.2. causes frame rates slowdown when scrolling between homescreens, lockscreens and in recents. When it appears you can even notice it while switching between the tabs in notification pulldown (gets really choppy). Problem appears randomly, sometimes after couple of hours, sometimes after a day or two. It cannot be eliminated by simple launcher change and turning animations off.
Turning animations off makes scrolling look faster indeed but it kills fluidity on the other hand which I really really don't like.
Click to expand...
Click to collapse
to each his own but i prefer having animations off. i havent seen any choppiness, even while doing the stuff you mentioned, and ive used 4.2.2 for 2 days now.

[/COLOR]
srsparky32 said:
to each his own but i prefer having animations off. i havent seen any choppiness, even while doing the stuff you mentioned, and ive used 4.2.2 for 2 days now.
Click to expand...
Click to collapse
Rebooting, changing wallpaper, rotating screen (under recents) are known workarounds to temporarily get rid of this lag. Probability to reproduce the issue is lower when you did one/ some of them.

Workarounds aren't a fix for the sluggishness - it's still a workaround. And nothing is a workaround for worse RAM management compared to 4.1.2.

Hmm try opening a couple of tabs in browser (5+) and open the tab switcher and scroll. If you see lag, well done. If you don't, the flash 4.1 to see real butter. I can go on and on but the browser is the most apparent lag. Battery life too. Do not suggest me to flash custom kernels, been there done that. 4.2 is just a laggy mess all over. I've wiped, flash factory images, try out many roms even the rom OP is using. But none are as fast as good old 4.1
Sent from my Galaxy Nexus using Tapatalk 4 Beta

Look's as fast as F1 car! :good:

Micro lag on nova launcher

Folks when using nova launcher there's a clear noticeable lag when launching apps from home screens.
I've tested this versus stock oneplus launcher. On stock oneplus launcher apps launch instantly after you tap on an icon, whilst on nova the app icon lights up & then the app is launched afterwards. My best mate who also uses a oneplus 3 has been experiencing the same issue.
To test this for yourself, use oneplus launcher for a minute, opening various apps - then do the same on nova and you'll immediately notice the micro lag.
This also occurs when launching apps from the app drawer.
Anyone else noticed this?

I also experience the exact same issue. Noticed it couple of days ago but haven't had time to post about it here.
I have reported the issue to the Nova Launcher Dev via email and also in the Beta Google+ page. This is definitely a Nova Launcher bug as I have tested Google Now Launcher, the new Pixel Launcher and the official One plus launcher.
On all three apps open the instant an icon is touched while on nova an icon is touched, the icon briefly lights up and only then opens. It is something you might not notice initially but once someone tells you or shows you, you can't miss it and it gets more and more iritating with time.
Have tried moving to other launchers but the uncustomisable grid size on Google Now, Pixel and Oneplus launcher keep me from doing so as most of them have massive vertical gaps inbetween apps on the homescreen.
It happens on both Latest Beta and Latest Stable version of Nova Launcher Prime. Have tried to remove all widgets off homescreen, turning off animations system wide, but it did not make a difference.
Running Official Rooted Stock with Viper4Android Oxygen 3.2.6. Do not use xposed so a module can't be the culprit.

Try changing scroll speed and animation speed to Fast under nova setting look and feel. Also in developer settings change transition animation scale, animator transition scale and windows animation scale all to .5

stevessvt said:
Try changing scroll speed and animation speed to Fast under nova setting look and feel. Also in developer settings change transition animation scale, animator transition scale and windows animation scale all to .5
Click to expand...
Click to collapse
The problem isn't an animation problem. It is a delay that happens before the animation even takes plays. It doesn't matter even if you switch the animations off system wide under eveloper options the delay between when you tap on an app and it opening is still noticeable

Oh, ok. Mine is bone stock unrooted and don't have any stutters that I can see. Wish I could help.

stevessvt said:
Oh, ok. Mine is bone stock unrooted and don't have any stutters that I can see. Wish I could help.
Click to expand...
Click to collapse
No worries bro, thanks for chiming in :beer:

Can't say I notice anything more than the animation.

My nova beta with prime on stock oxygen 3.2.6 is as smooth as one plus launcher.

I don't notice it myself; that said, I'm using FreedomOS (slightly modified OOS) and blu_spark kernel, which might help improve performance a bit.
Most apps open up before I even manage to lift the finger off the screen, those that take longer are equally slow on both launchers. (Talking about cold starts here, once they're in RAM everything's pretty much instant).
Sent from my OnePlus 3 using Tapatalk

It probably comes from the fact you can assign 2 different apps for the same icon.
One for "click" and one for "slide up".
If you slide up the app drawer icon you'll enter in Nove Settings for example.
"Not a bug, just a feature" ^^
Same thing with SmartLauncher.

krohme said:
Folks when using nova launcher there's a clear noticeable lag when launching apps from home screens.
I've tested this versus stock oneplus launcher. On stock oneplus launcher apps launch instantly after you tap on an icon, whilst on nova the app icon lights up & then the app is launched afterwards. My best mate who also uses a oneplus 3 has been experiencing the same issue.
To test this for yourself, use oneplus launcher for a minute, opening various apps - then do the same on nova and you'll immediately notice the micro lag.
This also occurs when launching apps from the app drawer.
Anyone else noticed this?
Click to expand...
Click to collapse
I'm using Nova since two weeks with RR and Boeffla's Kernel, and I have no lags at all. I've set the animation of Nova to "Fast". When I open the drawer, or the widget menu, I can't notice any micro lag. I think this problem is not Nova-related

Dushaine said:
It probably comes from the fact you can assign 2 different apps for the same icon.
One for "click" and one for "slide up".
If you slide up the app drawer icon you'll enter in Nove Settings for example.
"Not a bug, just a feature" ^^
Same thing with SmartLauncher.
Click to expand...
Click to collapse
That shouldn't cause any lags, sliding and tapping are completely different actions.
Lags or rather delays happen when you have double tap functions, because in that case the system has to wait after first tap to see if you'll tap again. But sliding has no influence here.
I'm using swipe-up functions on multiple icons and still see no lag whatsoever.
Sent from my OnePlus 3 using Tapatalk

Explorer23 said:
That shouldn't cause any lags, sliding and tapping are completely different actions.
Lags or rather delays happen when you have double tap functions, because in that case the system has to wait after first tap to see if you'll tap again. But sliding has no influence here.
I'm using swipe-up functions on multiple icons and still see no lag whatsoever.
Click to expand...
Click to collapse
He said "micro-lag" not huge lag. But you're right, those are two different things
I just checked on my device and I have a little latency due to the animation (just tried to change the speed animation and it fixed it).

I can confirm this lags on RR with Nova launcher, Trebuchet open the aps faster!

Doesn't happen to me on Sultan's ROM.

Micro Lag
Paraless said:
Doesn't happen to me on Sultan's ROM.
Click to expand...
Click to collapse
The lag is a MICRO lag not a very noticeable lag. Any other launcher including, google now, pixel, one plus and action launcher 3 don't have it but nova does. doesnt matter if your using stable or beta builds. Makes no difference what home screen set up you got. There is slight delay between when you touch the screen and the app icon you pressed starts playing animation. The app lights up first which it shouldn't do. it should just start animation the minute the app icon touchscreen input is detected. It is alot less likely to happen if the app is not in memory. Once the app is in memory it does it every single time you press home, whatsapp for example. Moved to Action Launcher 3 after using Nova Prime for past 3 years. Reported to developer via email and google+ beta page but no reply in 3 days.

noticed this since i got the phone a couple of weeks ago, but only if keeping app in memory (i.e. hitting home instead of back). if i hit back to exit app, this delay doesn't occur (except maybe w/ facebook)
only happens w/ nova launcher and definitely specific to OP3. i would use stock launcher, but i prefer to turn all animations off, and nova seems to be the only launcher that keeps the light up on button/app press with animations off.
in general, OP3 seems to lag a bit compared to my OPX in regards to navigating menus (i.e. settings)

I can also confirm microlag when launching apps, really annoyed with it.

Three little "problems" I found using the OnePlus 5T

Hey guys,
while I'm extremely happy with the phone (awesome screen, perfect fingerprint location IMO, general form factor), I've come across three little problems:
1.) The biggest "flaw": Using another launcher / wallpaper than the stock one causes the face-unlock to be slower. And if you set another launcher / wallpaper, there will be a noticeable delay when you turn on the screen: The wallpaper will take longer to appear on the screen than everything else.
2.) The time between hitting the power button on the right / using the double-tap-to-wake feature and the screen actually turning on is almost a second. Coming from the 3T btw, where it almost felt instant.
3.) I'm not sure whether it's a flaw but it's just something that looks strange: The greyish navbar when using a dark-themed app. (I wouldn't really call this a problem, it's just a consistency flaw you notice, while operating the phone.
So first of all: Do you have the same impressions? It might very well just be my phone and you don't encounter these problems. But in another thread I already read about the face-unlock time taking longer, when using another launcher / wallpaper.
Thanks in advance for any replies and experiences!

Sangraphim said:
Hey guys,
while I'm extremely happy with the phone (awesome screen, perfect fingerprint location IMO, general form factor), I've come across three little problems:
1.) The biggest "flaw": Using another launcher / wallpaper than the stock one causes the face-unlock to be slower. And if you set another launcher / wallpaper, there will be a noticeable delay when you turn on the screen: The wallpaper will take longer to appear on the screen than everything else.
2.) The time between hitting the power button on the right / using the double-tap-to-wake feature and the screen actually turning on is almost a second. Coming from the 3T btw, where it almost felt instant.
3.) I'm not sure whether it's a flaw but it's just something that looks strange: The greyish navbar when using a dark-themed app. (I wouldn't really call this a problem, it's just a consistency flaw you notice, while operating the phone.
So first of all: Do you have the same impressions? It might very well just be my phone and you don't encounter these problems. But in another thread I already read about the face-unlock time taking longer, when using another launcher / wallpaper.
Thanks in advance for any replies and experiences!
Click to expand...
Click to collapse
1) I do not have the problem using Nova Launcher
2} I press the power button the screen appears in less than half a second
3) I do not have that problem but I only have two dark themed apps
Sent from my OnePlus 5 using XDA Labs

Like this
Sent from my OnePlus 5 using XDA Labs

There's an app in the play store called Navbar Apps which can fix the navbar colour issue. Doesn't even need root!

Lum_UK said:
There's an app in the play store called Navbar Apps which can fix the navbar colour issue. Doesn't even need root!
Click to expand...
Click to collapse
Thanks Lum_UK, but I already tried that one. I find it to be a bit slow in overlaying the "correct" color, i.e. the overlay isn't always there from the beginning when opening an app.
And I'm not interested in rooting anymore.

You can force it to just black in that app, which may be preferable to the grey, and avoids the delay issue.
Otherwise, probably not much you can do unless a future OOS adds new options.

Use gallery to set ur wallpapers, do lockscreen 1st then homescreen, don't do both. Using Action Launcher

Bradl79 said:
Use gallery to set ur wallpapers, do lockscreen 1st then homescreen, don't do both. Using Action Launcher
Click to expand...
Click to collapse
Doesn't change anything for me

Sangraphim said:
Doesn't change anything for me
Click to expand...
Click to collapse
What launcher r u using

So far I tried Nova, Lawnchair and the stock launcher. I'm encountering this problem with Nova and Lawnchair, not with the stock one. But if I set a custom wallpaper in the stock launcher, the wallpaper-appearing-delay is also there.

Sangraphim said:
So far I tried Nova, Lawnchair and the stock launcher. I'm encountering this problem with Nova and Lawnchair, not with the stock one. But if I set a custom wallpaper in the stock launcher, the wallpaper-appearing-delay is also there.
Click to expand...
Click to collapse
Tbh I think the only thing that will be useful is a factory reset
Sent from my OnePlus 5 using XDA Labs

Sangraphim said:
1.) The biggest "flaw": Using another launcher / wallpaper than the stock one causes the face-unlock to be slower. And if you set another launcher / wallpaper, there will be a noticeable delay when you turn on the screen: The wallpaper will take longer to appear on the screen than everything else.
2.) The time between hitting the power button on the right / using the double-tap-to-wake feature and the screen actually turning on is almost a second. Coming from the 3T btw, where it almost felt instant.
3.) I'm not sure whether it's a flaw but it's just something that looks strange: The greyish navbar when using a dark-themed app. (I wouldn't really call this a problem, it's just a consistency flaw you notice, while operating the phone.
Click to expand...
Click to collapse
#2 is because of face unlock. Disable it and it will be instant.
Personally i use ambient display + lift up display so when i pick the phone i can see the clock and if needed, the double tap to wake in that screen is instant too

Sangraphim said:
Thanks Lum_UK, but I already tried that one. I find it to be a bit slow in overlaying the "correct" color, i.e. the overlay isn't always there from the beginning when opening an app.
And I'm not interested in rooting anymore.
Click to expand...
Click to collapse
You can turn off the animation in Navbar Apps as well. That way the correct color will load much faster.

I don't use Face Unlock, but everything turns on instantly for me.
However, the nav bar color oscuro the worst and I can't wait to get back to a good AOSP firmware. OxygenOS is great and all but missing very important features I just can't live (comfortably) without.

fuarkgl3 said:
#2 is because of face unlock. Disable it and it will be instant.
Personally i use ambient display + lift up display so when i pick the phone i can see the clock and if needed, the double tap to wake in that screen is instant too
Click to expand...
Click to collapse
You're right! This means bye-bye then to face unlock, unless this is fixed. I'm using smart lock anyway. :good:

Thank you for all your replies so far! They really were helpful!
Now could you still say something about "problem" #1? Do you observe the same or is it different? So if you use another launcher / wallpaper, will the wallpaper take longer to load then everything else?

1. agreed, same exact issue here.
2. i dont have that issue. both FP and FU are pretty much instant. sounds strange. maybe factory reset is really the way to go.
3. yea i agree, not optimal.

Hey guys,
I just wanted to give a heads up to you: I just discovered how to avoid the 'wallpaper-lag' while turning the screen on when using a non-stock wallpaper or non-stock launcher:
1. Force stop the OnePlus launcher.
2. Uninstall any updates to it.
3. Use the launcher you like. (Tested with lawnchairs and Nova)
At least for me, the wallpaper lag is gone!

Sangraphim said:
Hey guys,
while I'm extremely happy with the phone (awesome screen, perfect fingerprint location IMO, general form factor), I've come across three little problems:
1.) The biggest "flaw": Using another launcher / wallpaper than the stock one causes the face-unlock to be slower. And if you set another launcher / wallpaper, there will be a noticeable delay when you turn on the screen: The wallpaper will take longer to appear on the screen than everything else.
2.) The time between hitting the power button on the right / using the double-tap-to-wake feature and the screen actually turning on is almost a second. Coming from the 3T btw, where it almost felt instant.
3.) I'm not sure whether it's a flaw but it's just something that looks strange: The greyish navbar when using a dark-themed app. (I wouldn't really call this a problem, it's just a consistency flaw you notice, while operating the phone.
So first of all: Do you have the same impressions? It might very well just be my phone and you don't encounter these problems. But in another thread I already read about the face-unlock time taking longer, when using another launcher / wallpaper.
Thanks in advance for any replies and experiences!
Click to expand...
Click to collapse
For 1) and 2) : Did you force stop the oneplus launcher? No lag here..
edit, I see @Sangraphim already posted this right above this post

Sangraphim said:
Hey guys,
I just wanted to give a heads up to you: I just discovered how to avoid the 'wallpaper-lag' while turning the screen on when using a non-stock wallpaper or non-stock launcher:
1. Force stop the OnePlus launcher.
2. Uninstall any updates to it.
3. Use the launcher you like. (Tested with lawnchairs and Nova)
At least for me, the wallpaper lag is gone!
Click to expand...
Click to collapse
For me this doesn't solve the problem. If the wallpaper is set through another launcher (Nova in my case) and if I use Nova, when using face unlock, i first see the lock screen for some split seconds and then it unlocks. If the lockscreen wallpaper is set through the OnePlus launcher itself, it skips the split seconds on the lockscreen completely and goes directly onto the homescreen which feels much more instantaneous. Also if I'm using a live wallpaper, like the nice new Pixel wallpapers which I wanted to use, the problem occurs even when setting the wallpaper through the OnePlus launcher and when using OnePlus launcher itself.
I've uninstalled the OnePlus launcher updates and tried to force stop it (although this wasn't possible as it seemingly wasn't even started to begin with), but nothing changed.
And yes, the wallpaper will often times take longer to appear on the screen than everything else, exactly like Dimitry from Hardware Canucks demoed in his review:
https://youtu.be/Kf93Nz_bgFs?t=7m48s
This looks very glitchy in my opinion but is of course rather nitpicky.
And as Sangraphim said, the time between hitting the power button on the right / using the double-tap-to-wake feature and the screen actually turning on is definetly prolonged when using face unlock - but that's probably by design I guess, because it starts the front camera first and waits a bit to detect a face before actually turning on the screen.