Since "Mortal Kombat X" was never officially released for the PlayStation Portable (PSP), the file users are downloading is usually a modded version of (the official PSP title) or a fan-made ISO mod.

If you experience stuttering, try setting "Frameskipping" to 1 and "Mode" to "Buffered rendering" in the PPSSPP settings.

If you still wish to try a fan mod, follow these general steps found in community tutorials :