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Glossary

INT8 / fallback path

The lower-precision or older-generation path used when full FSR4 requirements are not met.

INT8 / fallback path feature illustration

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Definition: INT8 / fallback path

The lower-precision or older-generation path used when full FSR4 requirements are not met.

A fallback can still be useful, but judge image quality and FPS on what is actually running.

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 INT8 / fallback path mean for OptiScaler?

The lower-precision or older-generation path used when full FSR4 requirements are not met. A fallback can still be useful, but judge image quality and FPS on what is actually running.

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.