Screen flickering issue on 4K Monitor

Bug Reports
1

Issue:

  • Screen flickers when I move mouse pointer.
  • Flickering occurs for whole screen - not only Aseprite window.
  • This happens at maximized on 4k 144hz monitor, not for other screen size, nor on 4k 60hz.
  • This happens at any Screen scaling and UI elements scaling
  • This not happens at Full screen mode.
  • This not happens for any other programs.
    = OOPS, SORRY! This seems happen for other programs, too. (Chorme, Clip Studio etc.)

Environment

  • This never happened before, but there was a change for environment:
    = GPU : GTX1050Ti → RTX3060
    = Monitor : 24" FHD 144hz → 27"UHD 144hz

Guess:

  • Only happened at [Maximized window + status bar + 4k 144hz] condition
  • Maybe some conflict between window native UI and Aseprite gives load on GPU?

Other:

  • I can work on a bit smaller windowed mode for while, if you need more info - I can help.
2

Sorry for the necro. This bug is still present even in modern Aseprite as of v1.3.9.
I have a 1440p monitor with a 240hz refresh rate as opposed to a 4k monitor but my symptoms are identical.

My screen flickers black rapidly around any spot of the screen that’s being updated. Notable is that the pixel cursor has black boxes surrounding it whenever this bug happens.

I was able to get this to fix itself by toggling fullscreen on and off again (F11 twice)