Proton-CachyOS adds low latency layer and Discord rich presence support

Proton-CachyOS version 11.0-20260519 has released bringing support for the new open source low_latency_layer, along with Discord rich presence.

Anyone can run their own fork of Valve's Proton as it's open source. Check out the GamingOnLinux Guide to all the different Proton versions. Proton-CachyOS includes a lot of extras on top of Valve's Proton, based on their testing code and various patches (so in some ways it can be more unstable).

The main changes for this release include:

• Updated to Proton Experimental Bleeding Edge 11.0-20260518b
• Imported a number of fixes and updates from Proton-EM for winewayland.drv. Thanks to @Etaash-mathamsetty
  • Fixed some issues with color management. Thanks to @kode54 for identifying the issues and providing the basis for the fixes CachyOS/wine-cachyos#6, CachyOS/wine-cachyos#8.
  • Fixed a bug where mouse pointer wouldn't warp when the pointer lock was released.
  • Fixed some cases where the winewayland event dispatcher thread would get suspended.
  • Improved ensure contents implementation for opaque surfaces.
• Improved video playback patches which should allow more games, especially visual novels, to play their media without issues. Games which previously required PROTON_MEDIA_USE_GST=1, should work out of the box. Thanks to @NelloKudo
• Renamed PROTON_MEDIA_USE_GST to PROTON_MEDIA_FORCE_GST to disable protofixes that used the former to workaround media playback issues. We are cautiously confident that many things will work now out-of-the-box. Still the configuration options remains through the renamed environment variable in case it is still needed for anything or debugging.
• Removed the extraneous PROTON_VKREFLEX environment variable which enabled dxvk-nvapi's Reflex layer. Exposing the layer, as well as enabling it, is now controlled by the original upstream environment variable DXVK_NVAPI_VKREFLEX=1.
• Included low_latency_layer as an optional layer. It can be enabled using LOW_LATENCY_LAYER=1. This only enables the layer, for further configuration options refer to the project's documentation.
• Included rpc-bridge with Proton to allow the games to set Discord's Rich Presence. The service does not run by default and can be enabled using PROTON_DISCORD_BRIDGE=1.
• Fixed the OptiScaler injection method in Wine to work in more games. Due to the way it works, it might hook overlays instead of the game. If that stops OptiScaler from working, you can block it by editing the config and adding the overlay process in the ProcessExclusionList. Let us know by making an issue so we can exclude more overlay processes in the future.
• Updated protonfixes to stop "unsymlinking" the whole prefix unconditionally. Reduces the size of the prefix and should improve Proton warmup time.
• Updated Wine to default to Windows 11

Source: GitHub

To use it you can follow all the same steps as in the GE-Proton guide here on GamingOnLinux, you just pick Proton-CachyOS instead.