¶ PikaOS FSR 4 Setup Guide
¶ Prerequisites
First, ensure you have the latest pika-patched mesa-git packages installed:
pikman upgrade
pikman install mesa-git mesa-git:i386
sudo reboot
¶ Setup Steps
- Close Steam completely
- Open ProtonPlus and install either:
- Latest Proton-EM
- Proton CachyOS
- Proton GE
- Set your game to use the Proton version you installed
- Add the following to your game's Steam launch options:
fsr4_on %command% - Launch your game
Some supported games will show the FSR version as shown in the screenshot from Monster Hunter Wilds below, while others won't display this information.
¶ Compatibility
The FSR 4 overrides require the game to already supports FSR 3.1.
If your game doesn't natively support FSR 3.1, you can use OptiScaler:
- Install OptiScaler into your game directory from: https://github.com/cdozdil/OptiScaler
- Use the same
fsr4_onlaunch command as described above