I'm using latest After Effects 23.0 and I have strange problem. This problem is like a game term Vsync.
For example I create fast flashing black and white animation. Random frames have random colors: 100% black or 100% white. When I press playback somtimes I see bad frames like half is black and half is white, or top 25% is black and bottom 75% is white and so on. Same problem in Premiere Pro.
I'm using laptop with Nvidia A5000 graphics. Project is CUDA accelerated. My screen is 60Hz and composition is 30 fps.
After rendering on final .mov video everything is fine, no such problems.
Also on other computer (with different graphics card) I'm using older version of After Effects and don't see same problems.