--- title: "OptiScaler on Linux (Proton) | OptiScaler" description: "Linux use is possible in supported configurations, commonly through Proton or Wine, but Vulkan, driver, and upscaler requirements can differ from Windows." canonical: https://optiscaler.ink/platforms/linux-proton updated: 2026-10-18 --- # OptiScaler on Linux through Proton Linux use is possible in supported configurations, commonly through Proton or Wine, but Vulkan, driver, and upscaler requirements can differ from Windows. ## Facts (2026-10-18) - **Version:** OptiScaler 0.9.4 (reference build, July 2026) - **APIs:** DirectX 11, DirectX 12, Vulkan - **Upscalers:** DLSS, FSR and XeSS inputs/outputs where compatible - **Frame generation:** Experimental OptiFG (DirectX 12) - **Overlay:** Insert key - **Install:** ZIP extracted next to the main game executable - **Platform:** Windows; Linux via Proton/Wine varies - **Site:** Independent guide — not the official project site ## In short Linux use is possible in supported configurations, commonly through Proton or Wine, but Vulkan, driver, and upscaler requirements can differ from Windows. ## Steps 1. Confirm the game runs stock under Proton. 2. Place files next to the game executable in the prefix. 3. Press Insert in game. 4. See the [Linux guide](https://optiscaler.ink/guides/linux-proton-guide) for troubleshooting order. ## Facts that do not change Reference build is OptiScaler 0.9.4. Install is a ZIP next to the main game executable; the overlay opens with Insert. Avoid online or anti-cheat protected games, and test offline first. ## Linux, Proton and Wine: related searches - [OptiScaler Linux](https://optiscaler.ink/keywords/optiscaler-linux) - [OptiScaler Linux Guide](https://optiscaler.ink/keywords/optiscaler-linux-guide) - [How to Use OptiScaler on Linux](https://optiscaler.ink/keywords/how-to-use-optiscaler-on-linux) - [OptiScaler Linux Setup](https://optiscaler.ink/keywords/optiscaler-linux-setup) - [OptiScaler Proton](https://optiscaler.ink/keywords/optiscaler-proton) - [OptiScaler Proton Setup](https://optiscaler.ink/keywords/optiscaler-proton-setup) - [OptiScaler Wine](https://optiscaler.ink/keywords/optiscaler-wine) - [OptiScaler Wine Prefix](https://optiscaler.ink/keywords/optiscaler-wine-prefix) - [OptiScaler Proton Prefix](https://optiscaler.ink/keywords/optiscaler-proton-prefix) - [OptiScaler Linux Per Game Prefix](https://optiscaler.ink/keywords/optiscaler-linux-per-game-prefix) - [OptiScaler VKD3D](https://optiscaler.ink/keywords/optiscaler-vkd3d) - [OptiScaler DXVK](https://optiscaler.ink/keywords/optiscaler-dxvk) - [OptiScaler Linux Vulkan](https://optiscaler.ink/keywords/optiscaler-linux-vulkan) - [OptiScaler Linux DirectX 12](https://optiscaler.ink/keywords/optiscaler-linux-directx-12) - [OptiScaler Linux Driver](https://optiscaler.ink/keywords/optiscaler-linux-driver) - [OptiScaler Linux FSR XeSS Driver](https://optiscaler.ink/keywords/optiscaler-linux-fsr-xess-driver) - [OptiScaler Linux Vulkan Interop](https://optiscaler.ink/keywords/optiscaler-linux-vulkan-interop) - [OptiScaler Linux Not Launching](https://optiscaler.ink/keywords/optiscaler-linux-not-launching) - [OptiScaler Proton Overlay Not Showing](https://optiscaler.ink/keywords/optiscaler-proton-overlay-not-showing) - [OptiScaler Linux Performance](https://optiscaler.ink/keywords/optiscaler-linux-performance) - [How to Use OptiScaler on Linux 0.9.4](https://optiscaler.ink/keywords/how-to-use-optiscaler-on-linux-0-9-4) - [OptiScaler Linux FSR XeSS Driver 0.9.4](https://optiscaler.ink/keywords/optiscaler-linux-fsr-xess-driver-0-9-4) - [OptiScaler How to Linux FSR XeSS Driver](https://optiscaler.ink/keywords/optiscaler-how-to-linux-fsr-xess-driver) - [How to Use OptiScaler on Linux 2026](https://optiscaler.ink/keywords/how-to-use-optiscaler-on-linux-2026) - [How to Use OptiScaler on Linux Reddit](https://optiscaler.ink/keywords/how-to-use-optiscaler-on-linux-reddit) - [How to Use OptiScaler on Linux Tutorial](https://optiscaler.ink/keywords/how-to-use-optiscaler-on-linux-tutorial) - [OptiScaler Linux DirectX 12 0.9.4](https://optiscaler.ink/keywords/optiscaler-linux-directx-12-0-9-4) - [OptiScaler Linux Setup 0.9.4](https://optiscaler.ink/keywords/optiscaler-linux-setup-0-9-4) - [OptiScaler Linux Vulkan 0.9.4](https://optiscaler.ink/keywords/optiscaler-linux-vulkan-0-9-4) - [OptiScaler Linux Vulkan Interop 0.9.4](https://optiscaler.ink/keywords/optiscaler-linux-vulkan-interop-0-9-4) - [OptiScaler Proton Overlay 0.9.4](https://optiscaler.ink/keywords/optiscaler-proton-overlay-0-9-4) - [OptiScaler Proton Overlay Not Showing 0.9.4](https://optiscaler.ink/keywords/optiscaler-proton-overlay-not-showing-0-9-4) ## FAQ ### What is OptiScaler? OptiScaler is a community tool that can intercept supported in-game upscaler calls and redirect them to another supported upscaling backend, with additional tuning options. ### How does OptiScaler work in a game? The game exposes an input upscaler, OptiScaler sits between the game and the selected output backend, and the chosen output handles the final upscaling path where compatibility allows. ### Does OptiScaler support DirectX 11? Yes, DirectX 11 is supported, although the available output methods and behavior can differ from DirectX 12. ### Does OptiScaler support DirectX 12? Yes. DirectX 12 has broad support and is also the API used by experimental OptiFG functionality. ## Related - [OptiScaler on Windows, Linux Proton, DX11, DX12 and Vulkan](https://optiscaler.ink/platforms) - [OptiScaler FAQ: the official 20 questions, answered](https://optiscaler.ink/faq) - [OptiScaler on Windows](https://optiscaler.ink/platforms/windows) - [OptiScaler on DirectX 11 games](https://optiscaler.ink/platforms/directx-11) - [OptiScaler on DirectX 12 games](https://optiscaler.ink/platforms/directx-12) ## Download ZIP next to the game executable: [Download OptiScaler](https://optiscaler.ink/download) Markdown mirror: https://optiscaler.ink/platforms/linux-proton.md