Nvidia problem is in the Full screen Video Player 2

It appeared again, but not on all video files…
Everything is fine on one video in the browser, on another video it suddenly flashes…

And the screenshot of the entire screen is fine, but the rectangular area, the monitor is already going into standby mode.

nvidia-utils will be installed before mesa as a dependency

extra/nvidia … 565.77-12 0,00 MiB 54,29 MiB
extra/nvidia-lts … 1:565.77-11 0,00 MiB 54,30 MiB
extra/nvidia-utils … 565.77-3 0,00 MiB 241,26 MiB

So far, so good. Better than before.
But Haruna exits full screen, through a black screen. Once every 3.
VLC enters full screen, through a black screen. Once every 5.
At least the screen doesn’t go into “sleep mode”, and it takes screenshots normally.
I’ll keep watching for now.