Valve need more testing of the latest Proton Experimental for input latency improvements

Recently we highlighted another upgrade of Proton Experimental, the special testing area of Steam Play Proton that pulls in new and advanced features – well it needs a lot more testing. If you’re not clear on what Proton and Steam Play are, be sure to check out our constantly updated dedicated page.

Long-time Valve developer who has been focused on the Linux side, Pierre-Loup Griffais, sent further word on Twitter about the changes that have been made:

Latest Proton Experimental contains input latency improvements, especially for VSynced games, or GPU-bound games running below 60FPS. The changes affect how the frames are timed at a pretty low level, so it’ll need lots of testing to make sure there aren’t subtle regressions.

Need to know how to actually use Proton Experimental? Here’s a simple HOWTO (as it’s not complicated!). Make sure it’s installed by searching for it in your Steam Library, then select it from the Compatibility menu in the Properties section of a game. See our quick video below:

For an explainer in text form:

  1. Search for Proton Experimental and install if not already.
  2. Right click any game on Steam and go to Properties.
  3. Select the Compatibility menu on the right side.
  4. Ensure the “Force the use of a specific Steam Play compatibility tool” is ticked.
  5. From the dropdown box that appears select Proton Experimental.
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Author Of this post: Liam Dawe
Title Of post: Valve need more testing of the latest Proton Experimental for input latency improvements
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