I just found out: there is a way to play the 2D stages with "almost" full-speed!!!(faster then ultra speed) but only in twoplayer mode. at the selection screen, hold up and press FP,MK,WP! u will hear a sound and the next match is in super speed->on the box at fullspeed :-) if there could be a way to implement this cheat into the normal game, then 40fps would be enough ;-)