Proton-CachyOS 11 pushes Linux gaming further with OptiScaler integration

OptiScaler is now integrated on Proton-CachyOS version 11.0-20260506. This latest release from the CachyOS team also updates the Proton compatibility layer to the latest Proton Experimental base, but the upscaler integration is the main highlight.

For Linux gamers, this integration removes some of the friction involved in setting up the upscaler for the supported games. Of course, the developers describe the OptiScaler implementation as a work in progress. That means it might not work as intended in some cases.

Now, for those unaware, OptiScaler basically redirects one upscaling backend to another, but unlike Lossless Scaling (available on Humble), the game needs to have some sort of FSR, XeSS, or DLSS support. For the games that do bring support for upscalers, OptiScaler allows experimentation and can even bring better performance to the table.

Getting back to the Proton-CachyOS integration, it allows users to enable OptiScaler through environmental variables instead of manually injecting files into the game prefixes. Advanced users can still do manual installation for deeper customization.

Beyond the OptiScaler integration, this Proton-CatchyOS release brings a collection of fixes and many quality-of-life improvements. For instance, it simplifies HDR handling, fixes mouse pointer behavior, and addresses the previously broken H.264 playback. Check out the release notes to learn more about version 11.0-20260506.