65OLED903/12 4K UHD HDR plaback sometimes black flashes - Philips, Sony, TCL Android TV

Hello everyone,
I am using a 65OLED903/12 on android 8 and have an odd issue: when I am watching 4K UHD HDR content (does not matter which app is doing tha playback), I do get quick black screen blips from time to time. The screen goes totally black for a fraction of a second and then continues the plaback. This behavior is sometimes reproducable to specific scenes in the playback. I observed the issue some time ago and am not realy sure which stream caused this, I just remebered to ask about this.
Did or does anyone else experience this behavior?
Cheers
SEB

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https://youtu.be/ntcXADOM6ok
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