Significant performance drop in any native Linux game when the system cursor is not in focus

General system Gaming, sound and video
1

In any native game, when the cursor disappears, stuttering starts and the GPU load drops
video of this happening
This does not happening with a proton, anyone have any ideas why its like that?

2

kde 6.8 wayland
System settings - Display configuration - Color accuracy: choose “prefer color accuracy” instead of “prefer efficiency”