If you are attempting to fix a downloaded file that claims to be MK9 for PPSSPP, you are likely dealing with a modded version of Mortal Kombat: Unchained

Abandon search for “MK9 PPSSPP file” and instead search for “Mortal Kombat Unchained PPSSPP settings + MK9 skin mod”.

If the game still crashes during specific fights, you may need to enable a "60 FPS" or "Blur Removal" cheat. Place a cheats.db file in PSP/Cheats . Enable Cheats in the System settings.

He followed the instructions like a surgeon:

Set to Buffered Rendering . If you have a black screen, try "Skip Buffer Effects" (though this may cause flickering). Frame Skipping: Set to 1 or Off.