The game will run at approximately 15-20 FPS. Cutscenes may stutter, and large outdoor areas (the village opening) will lag significantly. Audio skips are common.
If the hassle of running Resident Evil 4 ISO on PSP feels overwhelming, remember that the PSP has excellent native Resident Evil titles that require no emulation or ISO conversion. resident evil 4 iso psp
Since no official UMD exists, the community has filled the void using two primary methods: The game will run at approximately 15-20 FPS
If you download a file labeled "Resident Evil 4 ISO PSP," you are downloading the mobile phone port. It is playable, but do not expect the graphical fidelity of the PS2 or Wii versions. For a better survival horror experience on the handheld, Resident Evil 2 or Resident Evil 3: Nemesis (both PS1 classics) are the superior choices for the system. If the hassle of running Resident Evil 4