CachyOS/proton-cachyos cachyos-10.0-20260228-slr on GitHub

Version 10.0-20260228

Proton (SLR and Native)

Update release to address a few concerns around DXVK-GPLALL in the previous one, based on 10.0-20260227.

Due to issues reported with DXVK-GPLALL, for example introducing lag-spikes when gplasync was disabled, it has been replaced with the individual patchsets from dxvk-low-latency and dxvk-gplasync, without further modifications. Accordingly, a couple of convenience options have been introduced to exclusively enable only one of the components instead of both. We refer to this version as dxvk-llasync internally for convenience, but it is NOT a fork or its own project. The newly introduced configuration is as follows.

Environment variable	Description
`PROTON_DXVK_LLASYNC`	When set to `1` it will enable the alternative DXVK with default configuration. This means that both `lowlatency` and `gplasync` will be enabled. This option SHOULD NOT be used with anti-cheat/multiplayer games.
`PROTON_DXVK_LOWLATENCY`	When set to `1` it will enable the alternative DXVK with configuration to enable only the `low-latency` component. The configuration is applied by appending to `DXVK_CONFIG` and is equivalent to `DXVK_CONFIG="dxvk.enableAsync=False"`. This option should make it safe to use with anti-cheat/multiplayer games.
`PROTON_DXVK_GPLASYNC`	When set to `1` it will enable the alternative DXVK with configuration to enable only the `gplasync` component. The configuration is applied by appending to `DXVK_CONFIG` and is equivalent to `DXVK_CONFIG="dxvk.framePace=max-frame-latency"`. This option SHOULD NOT be used with anti-cheat/multiplayer games.

When any of these options is used, the number of DXVK compiler threads is set to NUMBER_OF_CPUS - 2 with a lower limit of 3. I.e, if your CPU has 8 threads, DXVK will use up to 6, if your CPU has 4 threads it will use up to 3. This is meant to help with interactivity when compiling shaders during gameplay.

Proton (SLR specific)
- None
Proton (Native specific)
- None
Wine (Standalone)
- None

Note

We have been building arm64 packages of Proton-CachyOS for the past few versions. They are now part of the release but they are untested and possibly
broken. To use this build you will need to get and build a development version of umu-launcher from https://github.com/Open-Wine-Components/umu-launcher.
From the CLI interface it should work normally by pointing PROTONPATH to this proton build. If you want to enter the steamrt4 container to inspect it
without running proton, you can do so by running PROTONPATH=umu-steamrt4-arm64 umu-run xterm.

I also provide unpatched builds of Proton Experimental with support for umu-launcher in my personal repository
https://github.com/loathingKernel/Proton/releases which can be used for testing arm64

We are looking for testers, if you are interested, feel free to contact me (@loathingKernel) in the CachyOS Discord server.

Important

I know that we have a lot of different packages that might cause confusion. My suggestion is to be conservative and use x86_64. The x86_64_v2
and x86_64_v3 should be absolutely identical between them and with x86_64 across the board, and x86_64_v4 can be worse in some cases.
Feel free to experiment and see which fits better for your system, of course.

Warning

This release includes a x86_64_v4 package. This package is largely untested and experimental.
It may exhibit issues or completely refuse to work. Use at your own discretion and report issues here only.

Note

For Wayland specific flags and options, please refer to: https://github.com/Etaash-mathamsetty/Proton/blob/em-10/docs/EM-ADDITIONS.md

Note

For FSR4 related documentation, please refer to: https://github.com/Etaash-mathamsetty/Proton/blob/em-10/docs/FSR4.md

Note

For DXVK-Sarek specific options to tune its behavior refer to: https://github.com/pythonlover02/DXVK-Sarek?tab=readme-ov-file#shader-compilation

Note

For the low-latency related options to tune its behavior refer to: https://github.com/netborg-afps/dxvk-low-latency?tab=readme-ov-file#dxvk-low-latency
For the gplasync related options to tune its behavior refer to: https://gitlab.com/Ph42oN/dxvk-gplasync/

Base: https://github.com/ValveSoftware/Proton/tree/experimental-10.0-20260227

CachyOS/proton-cachyos cachyos-10.0-20260228-slr Version 10.0-20260228 on GitHub

CachyOS/proton-cachyos cachyos-10.0-20260228-slr
Version 10.0-20260228

on GitHub