Okay, so it seems that Games do launch on X11 but not on wayland.
Removing the new icd file, seems also not to help for wayland.
Here I have some logs, when launching Palworld and Rocket League.
steam-1623730.log (317.3 KB)
steam-252950.log (5.5 MB)
nvidia-bug-report.log.gz (2.1 MB)
Edit: Using gameescope on wayland works fine
Might be related then to kwin?