FSR 3 is an upscaling technique, creating high quality and resolution frames based on lower resolution input. By using this, your project can run in a drastically lower resolution without losing visual quality and increasing the framerate!
Technical details
Current supported Unity Render Pipelines:
Built-in (BIRP), Universal Render Pipeline (URP) and High-Definition Render Pipeline (HDRP).
Current supported platforms*:
- Windows (DX11, DX12, Vulkan)
- Linux (Vulkan)
- MacOS (Metal)
- Playstation 4
- Playstation 5
- Xbox One
- Xbox Series X|S
- Nintendo Switch
- iOS (Metal)
- Android (Vulkan)
* For older and/or mobile platforms, the GPU rendering cost of FSR 3 can be higher than the gains, in our tests often FSR 3 did improve performance, but each project is different and can yield different results.
Not supported platforms (for now):
- VR
- WebGL
Original_Link: https://assetstore.unity.com/packages/tools/utilities/fsr-3-upscaling-for-unity-252172