If you are experiencing crashes—particularly during loading screens, fighter entrances, or heavy grappling exchanges—the following settings are widely considered the "Better" fix for modern versions of RPCS3.
If you've followed every step and UFC Undisputed 3 still crashes during the Buffer weigh-in or a specific fighter’s entrance (I’m looking at you, Nick Diaz), you need a GPU driver rollback. ufc undisputed 3 rpcs3 crash fix better
RPCS3 has known conflicts with Nvidia drivers 545.xx and newer. Roll back to Driver 537.58 (September 2023) or use the open-source Vulkan driver via radeon-pro for AMD. After rolling back, clear the shader cache: RPCS3/cache/shaders/ and RPCS3/cache/SPU/. Roll back to Driver 537
Try these step-by-step:
Open RPCS3, right-click UFC Undisputed 3, and go to Change Custom Configuration. This overrides global settings for this game only. Here is the tried-and-true setup that eliminates 95% of crashes. This overrides global settings for this game only