A previous frame may appear again some time later on the screen, 20231129_234334 on Vimeo
This was mentioned in 477741 – kwin sometimes renders a previous frame on wayland .
KDE people said “apparently this is an issue with the NVIDIA driver…”, so I’m here.
nvidia-bug-report.log.gz (2.0 MB)
Your issue.
It seems that it has nothing to do with VRR.
All of my monitor neither supports G-Sync nor Freesync, but same situation.
You might be affected by the famous Glamour bug as described here: xwayland glamor renders incorrectly on nvidia (#1317) · Issues · xorg / xserver · GitLab does this sound more like your issue?
While the glamour bug should only affect appsrunning within XWayland. Which sounds not exactly like the issue you have as it’s with Konsole which to my knowledge should run as a native Wayland application on Wayland+kwin?
This is indeed different from a Xwayland misrendering. This happens in Wayland-native applications.
I also have this problem with native Wayland applications under Sway with a multi-monitor setup.
This is an issue with 545 series, the thread for that is here