—Reduce Resolution Scale to 100% or 125%. Disable Write Color Buffers if not needed for your specific hardware. Consider dropping SPU Threads to 1 to reduce CPU overhead. The original PS3 ran the game at approximately 33fps, so stable 30fps is perfectly acceptable for a playable experience.
It's important to address the legal framework surrounding repacks and emulation directly. Downloading a Fight Night Champion repack from unauthorized sources constitutes copyright infringement, as you are obtaining the game without paying for it. The legal way to play the game on PC is to: fight night champion repack