A new release of the Proton-CachyOS compatibility tool is now available, introducing support for vkd3d-low-latency. This community-developed version of Proton, which is separate from Valve’s official releases, aims to provide users with early access to patches and features for running Windows titles on Linux and SteamOS.

New Features and Technical Improvements

The core addition in version 11.0-20260703 is the integration of vkd3d-low-latency, developed by GitHub user netborg-afps. This feature provides hardware-agnostic, low-latency frame pacing specifically for DirectX 12 games.

  • Reflex Implementation: The layer natively implements the NVIDIA Reflex API within the translation layer, bypassing the need for conversion into VK_NV_low_latency2.
  • Frame Pacing: It allows for advanced frame pacing via Waitable DXGI Swapchains, which can significantly reduce input lag.

Users interested in utilizing this should note that the implementation is hardware-agnostic, though AMD users are encouraged to review the project's dedicated discussion page for specific details and potential limitations.

Updates and Configuration Changes

Beyond the low-latency support, this release includes several submodule updates, including:

  • d7vk
  • dxvk-sarek
  • low_latency_layer
  • nvidia-libs

The update also removes the default configuration for DXVK_HUD that previously enabled the compiler item. According to the release notes, this change was made because DXVK_HUD configuration previously took precedence over dxvk.conf, which often interfered with custom per-game configurations. By removing this default, the developers aim to restore control to users managing their own settings.

Player Impact

For players using Linux or SteamOS, these changes represent an effort to provide more granular control over performance and input latency. While features like vkd3d-low-latency can offer a more responsive experience in compatible DX12 titles, the developers remind users to review the status and limitations documentation on the project's GitHub repository before implementation. Proton-CachyOS can be managed easily on systems like the Steam Deck using tools such as ProtonPlus.