Hi Kent

Well investigation just makes me even more confused. Without reboot or similar the very same song pitched at 92,6% CPU load today, but during the 2:53 song the load continued to drop until it reached 36,7% at the end. It looks like once BIAB has generated the song, it takes some time before the CPU resources used/reserved are freed up for other applications to use.

Compared to the last test - the load stayed below 100% CPU load for the whole song, which was the opposite at the time I reported my issue.

As I use a Focusrite Scarlett 18i8 USB as primary audio device - I've tried to play the song with and without the Focusrite connected, but it didn't make any changes in the CPU load.

I also quit all other applications than BIAB, but the CPU load pattern stays the same.

My song is 95 bar - 5 bars contains various hold chords with 5 Real Tracks.

683 Bass
1263 Piano
1272 Guitar (tone 2)
645 Guitar (tone -1)
Real Drums = PraiseWorshipShine01

Reverb =0 for all instruments and no embellishment.

BPM 120-130 tried change up or down in BPM but still no change to the CPU load.

BIAB Memory use around 600 MB.

BIAB runs 32-bit (I just upgraded in a straight line since my first version 2015) - could that be a clue?


MacMini M1 - BIAB2021 - Logic Pro X - iZotope Music Production Suite - Scaler 2 - far too many Waves plugins and Line 6 Guitars and boards + a fantastic Yamaha THR10ll mini Amp - Avid MBOX Studio

Peters' Garage is available on all major streaming services