Proton-CachyOS, a Proton fork maintained by CachyOS with extra patches and performance tweaks, has been released in version 11.0-20260703.

This bugfix release is based on cachyos-11.0-20260702-slr and adds a new vkd3d-low-latency option contributed by @netborg-afps, enabled via PROTON_VKD3D_LOWLATENCY=1. It natively implements the NVIDIA Reflex API within the translation layer, providing hardware-agnostic low-latency frame pacing for DX12. The release also removes the default DXVK_HUD configuration, which previously overrode per-game settings set through dxvk.conf.

Proton (SLR and Native)

• Bugfix release based on cachyos-11.0-20260702-slr
• Included @netborg-afps’s vkd3d-low-latency as an option. It can be enabled with PROTON_VKD3D_LOWLATENCY=1. It is very important to read and understand the current status and limitations. Thanks to @netborg-afps
  • vkd3d-low-latency features built-in, hardware-agnostic low-latency frame pacing for DX12. It natively implements the NVIDIA Reflex API within the translation layer (bypassing the conversion into VK_NV_low_latency2) and also allows for advanced frame pacing via Waitable DXGI Swapchains to significantly reduce input lag.
  • AMD users should also take a look in the dedicated discussion
• Removed the default configuration for DXVK_HUD which enabled the compiler item. Because the DXVK_HUD configuration takes precedence over configuration coming from dxvk.conf, using DXVK_HUD would override perfectly working setups which used dxvk.conf as a way to do per-game configuration.
• Updated d7vk, dxvk-sarek, low_latency_layer and nvidia-libs submodules

Proton (SLR specific)

• None

Proton (Native specific)

• None

Wine (Standalone)

• None

Source: GitHub