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Diablo 4 Proton Experimental

A new Proton Experimental update was released yesterday that includes some game fixes and a fix for the Rockstar launcher. The birthday date selection dropdown works again in the Rockstar Launcher, while we have fixes for Diablo 4, Call of Duty: WWII, and Mortal Kombat 11.

The new Proton Experimental update should automatically download if you already have the experimental layer. If not, just search for Proton Experimental in the Steam store on your Steam Deck and download.

Proton Experimental 7/25/25 Update Changelog:

  • Fixed Chinese font rendering in Warage.
  • Fixed screen reader not working in Diablo 4 - requires download of Proton Voice Files.
  • Fixed Proton Experimental regression that caused Mortal Kombat 11 getting stuck on a black screen.
  • Fixed Proton 10 regressions:
    • Rockstar Launcher's birthday date selection dropdowns work again.
    • Call of Duty: WWII should no longer fail to render properly in fullscreen native resolution on setups with dual monitors.

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Noah Kupetsky
A lover of gaming since 4, Noah has grown up with a love and passion for the industry. From there, he started to travel a lot and develop a joy for handheld and PC gaming. When the Steam Deck released, it just all clicked.
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