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FSR4 Guide

OptiScaler FSR4 guide: compatibility, INT8 and fallback checks

Learn how OptiScaler FSR4 support works, why hardware and driver requirements matter, how fallback can occur, and what to verify before tuning.

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Download OptiScaler 0.9.4

In short

Learn how OptiScaler FSR4 support works, why hardware and driver requirements matter, how fallback can occur, and what to verify before tuning.

Steps

  1. Check the output path, GPU capability and driver/SDK behaviour for FSR4.
  2. Select the FSR4 output in the overlay where it is offered.
  3. Verify with the OptiScaler status or watermark indicator that FSR4, not a fallback, is active.
  4. If the hardware is unsupported, expect another output path instead.

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.

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.

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.

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