Sometimes the shader cache gets corrupted. Go to the game's Properties > Installed Files and select Verify integrity of game files .

If Proton Experimental still isn't fixing your specific bug, you can go one step further. Find in your Library. Go to Properties > Betas . Change "Beta Participation" to bleeding-edge .

Select the on the right side of the game page. Choose Properties . Navigate to the Compatibility tab.

Check the box: Select Proton Experimental from the dropdown menu.

of DXVK and VKD3D (the tech that translates Windows graphics to Linux). Experimental support for complex Anti-Cheat systems. How to Download Proton Experimental on Steam Deck

Select a game in your Library (e.g., Elden Ring or Cyberpunk 2077 ).

While it is tempting to use the newest version for everything, "Experimental" means it hasn't been fully vetted for stability.

Steam Deck users often find themselves in a familiar situation: a new blockbuster game launches, or an old favorite remains stubbornly "Unsupported," and the standard Proton versions just won't cut it. This is where Proton Experimental comes in.