The problem with introducing a new technology, whether it be an upscaler like FSR 4 or a hardware feature like AVX, is that you have to wait for software to make use of it. Except maybe not, in the case of FSR 4, thanks to the OptiScaler mod and its fresh support for AMD’s new AI-powered scaling tech.
Now, thanks to OptiScaler, there’s a solid chance that the game you want to play can be modified to use FSR 4 for its upscaling in place of whatever existing upscaling solution it supported before. The list of games where FSR 4 injection is known to work is surprisingly long, and includes big titles like Baldur’s Gate 3, Cyberpunk 2077, Dragon’s Dogma II, Kingdom Come: Deliverance II, MS Flight Sim 2024, Red Dead Redemption 2, and many more.

If you’ve got a shiny new Radeon card and you’re keen to try out FSR 4 in something besides Marvel Rivals and Space Marine 2, all you need to do is head to the OptiScaler Github, grab the latest nightly release, and then extract all the files adjacent to the executable for your game. Then, run the “OptiScaler Setup” batch file, which should rename the OptiScaler files automagically for your game. If that doesn’t work, check out the manual steps on this page here, or watch the video in the tweet above for a detailed installation guide.