Dragonball Z Budokai HD Collection [BLUS30966]

Why is it that this game in particular doesn't load correctly with the EBOOT file and needs to have the DBZ1 and DBZ3 bin files dragged into the emulator for them to work? Mine still black screens after selecting a game loading it the normal way. I'm only getting 30fps and I can play Raging Blast 2 at 4K@60fps. Seems strange. Using default settings.