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Valve lists Proton Experimental fixes for video playback and game crashes

The November 10 snapshot also lists an Xalia component update, while GamingOnLinux explains how the testing branch differs from numbered releases.

By Rowan Finch

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The numbers

Valve-listed update intended to help with idle CPU usage
0.5.0.1 Xalia software version
Experimental snapshot as of November 10, 2026 · ValveSoftware/Proton project

Valve’s Proton Experimental snapshot as of November 10 lists a fix for high-resolution video playback in Phantom Blade Zero, among changes highlighted by GamingOnLinux.

Valve also lists fixes for AION 2 crashing when the party-information audio icon is clicked and The Forest crashing while players cycle through multiplayer options. The changelog includes a fix for some HID-using peripherals that could crash Proton’s input stack and leave controllers unusable.

The snapshot lists an update to Xalia version 0.5.0.1 intended to help with idle CPU usage. Valve describes the Experimental snapshot as cumulative, incorporating all changes from Proton 11.0-2.

GamingOnLinux explains Proton as a compatibility layer for running Windows games on Linux. It describes Experimental as a testing branch for future numbered stable releases.

The outlet says updates to the branch appear in Steam Downloads and that the branch is available from the Steam Library for selection on individual games. In its November 10 report, GamingOnLinux identified Proton 11.0-2 as the most recent stable version and 11.0-3 as a release candidate in testing.

What we don't know yet

  • How do the reported fixes behave across affected game, device and controller configurations?
  • Which of these Experimental changes, if any, will be adopted in a numbered stable release, and on what schedule?

Sources cited

  1. Valve Proton Experimental changelog snapshot as of November 10ValveSoftware/Proton project · Primary source
  2. GamingOnLinux reports November 10 Proton Experimental changesGamingOnLinux · Nov 10, 2026 · Nonpolitical · Editorial record

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