I am not sure am I the only person having this problem. Playing USF4 over PS3 is horrible, the frame rate drops so bad that it is like playing in slow motion.
it only affected by certain stages, all the new stages are affected. as long as the background is messy.
some stages can drop to the extend as bad as 30 fps. totally unplayable.
it never happened on SSF4, only the USF4 giving this kind of problem.
However, Training Stage is not affected.
I am not sure what causes it. Perhaps my PS3 is needs to be retired soon?