That's exactly the same problem I have too. Unfortunately no solution in sight, other than tempo equalizing the originally recorded track to a constant tempo, e.g. by using the ACW tool in the BiaB standalone.
Not really a good solution.
I am repeating myself, but the BB plugin should follow the DAW tempo somehow!


BiaB2023 Plus, Win11, AMD 6-core, 32GByte RAM, RME Fireface UFX, Samplitude ProX7, REAPER 6, Studio ne 5, Melodyne Studio, Toontrack SD3, iZotope MP4, NI Komplete 12, Korg Collection, etc.