OptiScaler keyword index

What this hub is

Canonical index of real OptiScaler search phrases — install, overlay missing, FSR4, Linux, manager/client and comparisons. Every keyword below has its own page.

OptiScaler 0.9.4 is a community translation layer for DirectX 11, DirectX 12 and Vulkan games. This host is an independent guide, not the official project site. Start from Download, then come back here for the per-game checks.

The safe order

Back up the game folder.
Extract the ZIP next to the main game executable.
Launch offline and press Insert.
Change one output at a time, and never test in online or anti-cheat protected games.

Install and setup keywords

Overlay and usage keywords

FSR4 keywords

Linux, Proton and Wine keywords

Performance and settings keywords

Errors and fixes keywords

Manager and Client keywords

Comparisons keywords

Safety and anti-cheat keywords

OptiScaler basics keywords

Frequently asked questions

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.

Facts that do not change

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

Practical Checklist

Keep original files backed up before changing the game folder.
Test one setting or backend at a time.
Avoid anti-cheat protected online sessions.
Document the working configuration before updating.

Independent guide: This site is not affiliated with OptiScaler or any other third-party platforms.

Related Guides

Continue with the related guides in the sidebar for setup, compatibility, performance, or safety topics.

OptiScaler FAQ: the official 20 questions, answered — Standalone URLs for the official site's 20 OptiScaler questions — APIs, overlay, FSR4, Linux, anti-cheat and the manager question.
OptiScaler guides: install, FSR4, Linux, performance and safety — Step-by-step OptiScaler guides for installation, compatibility, performance, Linux, FSR4 and common user questions.
OptiScaler Install — Extract the required files beside the main game executable and follow the setup method suitable for that game. Always back up replaced files first.
How to Install OptiScaler — Extract the required files beside the main game executable and follow the setup method suitable for that game. Always back up replaced files first.
OptiScaler Install Guide — Extract the required files beside the main game executable and follow the setup method suitable for that game. Always back up replaced files first.

OptiScaler keyword index: every searched phrase, answered