With a tool called OptiScaler, you can inject FSR 4 into any game that supports one of the three popular upscalers (FSR 2 and newer, DLSS, or XeSS). All you've got to do is unpack the OptiScaler ...
The code in question is an 'extensible application markup language' file that Intel uses to configure how its Graphics Software app. It basically determines which menus, options, etc, get shown for ...