Hi Peter,

That really shouldn't be happening with a 2.2 GHz i7, the Mac Mini I use for testing has a 1.4 Ghz i5 and the CPU usage for Band-in-a-Box usually hovers around 50%, and never spikes past 89%. I'm testing it right now with a 96 measure song and 6 RealTracks.

Does the CPU usage spike to 105% near the beginning of playback (when the song would still be generating), then settle to a more reasonable number, or does it stay at 105% for the whole song?

Band-in-a-Box is regenerating all the tracks every time we hit Generate and Play, so that could account for the increased CPU usage when compared to Logic, but it really shouldn't be as bad as you've described.

Thanks
Kent
PG Music