Noel's advice is spot on.

Watch the mixer patch names while you change the tempo from 160 to 90 bpm. Does the instrument name stay the same or does the name include a tilde ( ~ ) symbol at the beginning of the name?

The tilde ( ~ ) symbol means Band-in-a-Box is automatically substituting a RealTrack to better match the song tempo. So if you change the song tempo and then freeze the instruments, the RealTracks may not accurately reflect your original tracks. While both the original selected RealTrack and substituted RealTrack may have the timing error it maybe easy to claim the timing error is an artifact created by stretching the tempo too much. I would not change the tempo unless you intend for the song to use 90 bpm. It confuses the issue.


Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk Sonar - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home