Trying this w/ a friends recent install, before deciding to get it from Reiza. We experienced audio stuttering on track. Has anyone experienced this? Any possible causes? FPS at mostly full Display settings shows 180+. We then observed that when pressing 'A' for AI control, sound goes back to normal, then after pressing it again for Player control, sound starts to stutter again... sometimes sound disappears. Returning to the main menu brings back the sound again (plays back the intro song). So it appears to be only during Player control on track. BTW, this is with Test mode, haven't tried in Race/Championship mode.