It is crucial to understand that the PSP version (released as part of the Resident Evil: The Essentials bundle or individually in Japan) is not a direct 1:1 copy of the GameCube or PS2 versions. It is based heavily on the PS2 port, meaning:
To achieve a stable 30 FPS (the game’s native cap) without overheating your phone, use these optimized settings. These are tested on Snapdragon 865 and newer chips, but work on most devices. Resident Evil 4 Ppsspp Android
Note: RE4 on PSP is capped at 30 FPS. Don’t expect 60 FPS—it’s a hard engine limit, not a performance issue. It is crucial to understand that the PSP
This article covers everything you need to know: performance, setup, the best settings, and whether this is the definitive way to experience RE4 on a smartphone. Note: RE4 on PSP is capped at 30 FPS