Without a pre-compiled cache, Cemu has to compile shaders in real-time while you play, causing massive stuttering. Placing the file here allows Cemu to pre-load them, resulting in smooth gameplay immediately.
For Cemu to successfully recognize and compile an external shader cache, the file path, naming convention, and emulator state must line up perfectly: cemu where to put shader cache
Do not change the filename unless you know the exact title ID. Cemu identifies the cache by the filename. Without a pre-compiled cache, Cemu has to compile