Switched from Bazzite GNOME to KDE and screen flashing white lines
I didn't have issues at first. Enabled HDR and noticed later that white lines started flashing. Turned off Adaptive Sync and it seemed to stop. It started back up again and I gave the system a reboot, no change and disabled HDR. That worked for a bit and then it started again. This happens without running anything, not running any games or using gamescope.
