Intermittent lag - Galaxy Tab S Q&A, Help & Troubleshooting

Hi,
I have a 10.5 inch Tab S (T800) for some time and it's mostly great.
The performance is very smooth most of the time, but occasionally, I experience (touch) lag.
I'm not gaming or using anything intensive, on the contrary, just Wifi browsing (Firefox) and reading (Adobe Reader). But even when reading (I can't think of an activity less demanding), sometimes when I scroll, I have noticeable lag. Also keyboard input lags. Given the raw power of the tablet and that I used much lower specced devices with no similar lag, I presume it's a problem.
I updated to the latest firmware from France.
I am now rooted & have Xposed.
I enabled "Force GPU rendering" (many said that it fixed similar problems), but I didn't notice any significant difference (maybe there could be, but it's subjective).
Is anyone else experiencing this?
What else should I try?
Thanks.

Related

[Q] Frame rate issues and stuttering

I've been having issues with the GN2's performance while scrolling menus and playing games. Jetpack Joyride is the most noticeable, with it stuttering all throughout. This even happens with simple games like Scramble with Friends, making it more unresponsive than it should be. Plugging the phone into the wall seems to lessen the stuttering. It also appears that the longer the app is used it slightly lessens the stuttering.
Strangely, frame rates seem better while playing 3D intensive apps like Death Dome.
My Galaxy S2 did not have any of these problems throughout its entire life span, ever. It did everything buttery smooth, which is strange considering this phone is supposed to be more powerful. The stuttering isn't terrible, but it's definitely there, and I'm not exactly happy with it.
This occurs no matter how many idle programs are closed or what Launcher that is used. I've used TouchWiz, Launcher Pro, and Go Launcher.
Is anyone else having this problem? Is this something that can be fixed or should I return the phone for another?
make sure power save is not enable.go to setting and check
mintu123 said:
make sure power save is not enable.go to setting and check
Click to expand...
Click to collapse
Wow, hahaaa! Thanks a lot! That's silly to think that works. I felt like it was some sort of power related issue and was sooner going to overclock the CPU than suspect that option.
It didn't work immediately after disabling it, but once I restarted the phone everything was fine. THANKS AGAIN!!

What causes lag?

What causes the occasional lag on the Nexus 7? With its fast cpu and ram it still seems to have more episodes of lag than I would expect.
Is Is there a utility that would let the user see which app or background process is responsible for the overloading? Some apps may not be worth having if they overload Android.
Or, since lag occurs after using the tablet for a while, is overheating the problem?
Something else?
Trying to understand. Thanks.
It's always hard to pinpoint what causes lag. You could run low on available ram then when something needs it, the system cleans up some older stuff, causing a delay in the action requested. It could happen while waiting for a minimum CPU freq to get to a smoother one. It can also depend on how the selected governor/scheduler are handling things. That's just to name a few.
prshosting.org

Does Tab S employ DVFS throttling?

This caused tremendous slowdown and throttling issues on the S4 but not sure if it is still in effect on the Tab S. Anyone know?
In Wanam Xposed there is an option to disable DVFS under Advanced Settings. I did that and nothing exploded so we'll see. Apparently what DVFS does is dramatically throttle the cpu as the tablet warms up, supposedly to preserve battery life.
Appreciate some expert input on this
Could be 100% placebo effect but here is what I have noticed after disabling DVFS.
1) Tablet feels a bit smoother overall.
2) Previously I noticed after browsing for a while, the keyboard input would begin to bog down. Now that seems to not be happening.
3) Previously after browsing for a while my memory usage would go to 90% and I would have to clear it. Now after an hour of browsing, typing in forums and watching videos, memory usage is only 69%.
So, as I said have no idea if these things are purely coincidence with no meaning. Simply reporting observations. Placebo effect can be strong.
for me, swiftkey seems to lag out horribly in Hangouts if a lot of things are in the memory..hangouts itself sucks and is much laggier when used on a non-stock android device, and swiftkey can also be called lagkey, so when you mix those two on the samsung devices, you have lag central. my GS4 had the same issue. when i clear out everyhting, it seems fine. maybe i'll look into this and see if that fixes it.
jayochs said:
for me, swiftkey seems to lag out horribly in Hangouts if a lot of things are in the memory..hangouts itself sucks and is much laggier when used on a non-stock android device, and swiftkey can also be called lagkey, so when you mix those two on the samsung devices, you have lag central. my GS4 had the same issue. when i clear out everyhting, it seems fine. maybe i'll look into this and see if that fixes it.
Click to expand...
Click to collapse
Yeah run it up the flagpole and see if you can feel a difference.
I tried Swiftkey and gave up on it. It kept freaking out and starting new words in the middle of words I had already typed. People seem to love it but for me it was complete fail. I'm back to the Stock keyboard after running this fix and typing seems much more consistent with no slowdown at all. Would be curious to hear additional feedback.
Other than that everything else just sort of "feels" better although it's hard to actually quantify it.

Overheating when gaming

I am having a problem with the you overheating(?) and crashing the Marvel Strike Force game. It will loop the last few frames then finally return to home screen after about 20 seconds or so. The issue doesn't happen while outside of combat, and it occurs after about 10 minutes of play. It can be repeated in a shorter amount of time if already hot. How is it possible to overheat the GPU? Shouldn't there be sensors and a governor? I can confirm that this happens on multiple Pixel Cs. I don't think that this is the game's fault, but rather bad governor, sensor, or lack of cooling. I also have no problem running this game on the Nvidia Shield (aside from it not being on the Play Store for Android TV or some control issues when using a mouse), which has the same chipset.
I was having this same issue and I was searching for a solution. The one that seems to work is to enable Developer Options, then in Developer Options Turn on the option to Disable HW Overlays. This seems to have resolved that issue, however the tablet still gets super hot.
You can see the issue here:
https://productforums.google.com/forum/#!topic/nexus/uBU9ekhQASM;context-place=topicsearchin/nexus/category$3Amanaging-accounts-and-settings%7Csort:relevance%7Cspell:false

Google maps performance sucks...

I can't find a solution in the web so I am trying it here.
Isn't there a way to properly force 120hz on google maps on a S20 without root? I have no clue what Samsung had done. Especially the app opening and closing animations are horrible. Stutter everywhere. I tried everything including having the newest software and factory resets...
I have a Xperia 5 ii in-house and this device didn't have this problem. It's totally smooth in comparison. I get it that some apps are running on 60 hz to conserve battery life but this is strange. Hopping in and out of the camera app doesn't lag at all although the app is also running in 60hz. Anybody has a solution and can confirm this ugly behavior?

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