Yeah, I haven't had any crashing issues as of yet, so I can run cups fine, but the lag cuts the FPS in half and makes it really hard to race. I find it easier at full speed, but having the speed cut has its benefits too I suppose.Hmm? For me, it didn't crash. But I also hate the "Blue Shadow" error in the Flower Cup.
Time Trials on the other hand, they run pretty much perfectly. No complaints there whatsoever. I might try beating all the staff ghosts in the non-DLC tracks.