Calibration trouble with GH5

I picked up Guitar Hero 5 today, and so far it’s totally unplayable. When I try to calibrate lag, it never adjusts the audio lag at all, and it’s obvious that the video lag is way off, too. I played a song or 2 with it way out of whack. I was actually playing an entire beat ahead of the song. I tried getting my lag settings from Smash Hits and manually putting them in, but that seemed even worse. Any ideas?