Bug 430447

SUMMARY
On high GPU load i have graphical glitches on my displays (multimonitor configuration)
I tried to launch game (Cyberpunk 2077) through steam, and in places with hard scenes i seem flickering lines on both displays(1st with fullscreen app and secondary without it). When i stopped game or returning to menu, GPU loading has lower and glitches stopped. If i don`t do this, wayland session can be crashed and return me to login screen.

I didn`t seen similar reports from another users in Valve/Proton theme (i not checked mesa) - most uses x11 session, and i didn`t seen similar reports from GNOME wayland/sway users. As i think its compositor problem.

Game used wine(proton) + VKD3D-Proton DX12 to vulkan translator, and i didn`t seen similar issue on his git branch. Sorry if i make wrong report

I tried disable second screen by system display settings, but glitches saves on main screen, and i think multiscreen GPU use its not main reason

STEPS TO REPRODUCE
1. Install and Run Cyberpunk 2077 through wine (or maybe another app with hi-gpu loading. Currently i seen this problem only with this game)
2. Go to place with use hi-gpu loading with dynamic scenes (on city) (higher graphical settings can reproduce problem faster)
3. Look at glitches :)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro(unstable branch)
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
GPU Radeon RX560 4gb/ Mesa 21.0.0
Multiscreen configuration - first 2560x1080 second 1600x900