Hi - I haven’t had this issue with either of the AMD-graphics devices I have, but I’ve seen folks who needed to add a Linux kernel parameter for the amdgpu driver component in order to avoid some odd glitches like that:
- (parts of) windows don't redraw when necessary at 120 Hz - #2 by ngraham
- F41 The screen flickers and shows visual artifacts when I type or scroll - Fedora Discussion
- Flickering issues SDDM on first boot - #4 by MrAnnonymus
It might be worth trying out some of those parameters, like amdgpu.dcdebugmask=0x10 , to see if they make a difference?