I see. So basically, it's just frame limiting. I wonder how the SCSP will sound when Bart adds sound to Supermodel, he said that he's using an earlier version of ElSemi's SCSP core, that might mean the music will sound a bit faster, am I right? I think you (RB) have an SCSP core for the newest M1, but the timer speed sounds a little bit slower than ElSemi's.