Thanks to the support of the third-party tool OptiScaler, AMD's FSR 4 technology has been greatly improved in terms of compatibility.OptiScaler (formerly known as CyberXeSS) can convert older super-score technologies in games (such as FSR 2 or DLSS, etc.) to newer technologies such as FSR 3.1.
For example, if the game supports FSR 2 and has not been updated to a higher version, OptiScaler can convert the FSR 2 input to DLSS, XeSS, or upsample it to a newer FSR version.
Previously, the software only supported FSR 3.1, but recently added compatibility with FSR 4, which means that users can use FSR 4 to replace the super score technology already supported by the game.
AMD FSR 4 uses AI driver, but currently only about 65 games natively support FSR 4. As of May 2025, more than 125 games support DLSS 4 (with frame generation).
However, this process is not simple. Users need to manually adjust the files of each game and further adjust the settings for the best experience. In addition, users also need to install FSR 4 separately in the game directory, but this varies from game to game.
It should be noted that when using OptiScaler to convert the old super score to FSR 4,There will be two restrictions. The first is that it cannot be a game based on the Vulkan API, because FSR 4 does not currently support Vulkan.
Additionally, users will need to have an AMD RX 9000 series graphics card as only these cards have the hardware (AI accelerator) required to run FSR 4.
