Compositor (X11)

If you use a DE with X11, then you probably have a compositor. The compositor does nice things like window shadow and effects. But it also reduces fps, adds input lag, and introduces stuttering. That's why you should disable it when running a game.

Disabling composition for your games

Disabling composition will dramatically improve input lag and "smoothness". Here is how to do it:

• If you use KDE: This can be done with a switch in Lutris settings. Right click the game -> Configure -> System options -> Disable desktop effects. If you use Steam or Heroic, you have to manually disable composition with shift + alt + f12. The same combination re-enables it.
• If you use Gnome: You don't have to do anything.
• If you use Cinnamon: Go to settings -> general -> disable compositing for full-screen window