Definition: Input upscaler
The upscaler a game already exposes — DLSS, FSR, XeSS or another supported temporal path.
OptiScaler starts from this input. No supported input usually means no OptiScaler route for that game build.
Where it matters
Start in the guides for the workflow, or go straight to Download and test one game at a time with a backup in place.
Frequently asked questions
What does Input upscaler mean for OptiScaler?
The upscaler a game already exposes — DLSS, FSR, XeSS or another supported temporal path. OptiScaler starts from this input. No supported input usually means no OptiScaler route for that game build.
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 terms: OptiFG, proxy DLL, input and output — Short definitions: input upscaler, output upscaler, OptiFG, proxy DLL, Insert overlay, FSR4 and fallback paths.
- OptiScaler guides: install, FSR4, Linux, performance and safety — Step-by-step OptiScaler guides for installation, compatibility, performance, Linux, FSR4 and common user questions.
- Output upscaler — The backend you select in the overlay to produce the final image.
- OptiFG — OptiScaler's experimental frame generation for some DirectX 12 scenarios.
- Insert overlay — The in-game OptiScaler configuration overlay, commonly opened with Insert.