Ok, I finally have a verdict on this PS3 Bayonetta slowdown nonsense. FINALLY beat the game today and there was exactly 1 spot that had a noticeable amount of slowdown. It's during a part where there's over a hundred moving platforms moving around at once, so, you know, it's understandable. You only have to fight 3 really weak dudes like that. There wasn't a damn bit of slowdown in Chapter XIV, so I don't know where that came from. I was able to get the Prologue to slow down a bit when I revisited it with some later weapons, but that was a fluke.