protonscr

Proton games will become unresponsive unless another window is overlayed on the game itself

protonopen
ValveSoftware/Proton#9533 · opened 2026-02-27 by Greaseball12345 · updated 2026-02-27 · 1 comments · github
GGreaseball12345 2026-02-27 github

Hello,

I've been having an issue since sometime October 2025, where when I launch ANY steam game that requires proton to launch, it will become incredibly laggy, (<0.1 FPS) and unresponsive on launch. However, if I have another window overlayed on the game itself, such as setting the terminal to "always on top", or holding ALT+TAB, it runs perfectly smooth. I am using Proton 10.0-4. Thanks

Kkisak-valve maintainer 2026-02-27 github

Hello @Greaseball12345, this reads like some kind of compositor or video driver issue with your desktop environment.

Proton versions