I own a Starfox 2 cart based on a Stunt Race FX cart (SuperFX GSU1A). The game does run on a pretty low framerate. The maximum framerate is 20, the lowest I have experienced is 8. I heard a lot about the improvements in overclocking the SuperFX chip. So I decided to do it as well. I removed the ceramic resonator and installed a 28.2240 crystal from an old Elsa MicroLink Modem. Unfortunately I can't notice any speed increase. The framecounter shows the the same framerate during the intro and the games. I had expected an increase in the framerate at least at the title screen. But it doesn't run any smoother at all. A member of the benheck forums had similar problems with marshall's mod and he claims that it's just a hype. He shows another method of overclocking the SuperFX chip: http://forums.benheck.com/viewtopic.php?f=58&t=44345 I'm not an expert in overclocking. I have no idea if he's right or not. I'm interested if anyone here had similar problems with his Starfox 2 cart. I just would like to play it a little bit smoother.