SUMMARY

Kwin has completely borked VRR handling as of now. Set VRR to Auto ( means no VRR at desktop etc ) , play a game that switches between some locked fps between main menu/gameplay etc, return to desktop afterwards. Open up your monitors refresh rate ( not FPS ) counter, see how it jumps between lowest hz of VRR range and highest. ( Respectively 48 and 165 for me ).

If easier repro step wanted ( no game ) , open MPV with wayland context and Vulkan. Notice how VRR is enabled and jumpy. Afterwards set a window rule for MPV to DISABLE vrr open MPV again. Notice how vrr is not disabled at all. Return to desktop, notice how desktop acts like VRR is forced. Disable VRR from KDE settings, notice how it doesnt change anything.

Restarting the system fixes the issue, until you repro again.

STEPS TO REPRODUCE
1. It was a bit long so i couldnt breakdown it to three steps. Written above.

OBSERVED RESULT

VRR itself ignoring any setting and window rules with steps above.

EXPECTED RESULT

To not do that.


SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Arch Linux ( EndevaourOS )
KDE Plasma Version: 6.1.3

ADDITIONAL INFORMATION

System info:

Kernel 6.10.3
7900 XTX gpu usee with display port