Maybe the fact BiaB is not using 24 bit (?)
Native audio in BiaB is 16/44 so conversions are going on somewhere.
Just an idea, not sure if a solution

Does it happen if you try the same process using 16/44?
It seems weird that this would only affect one track, so I hesitated to suggest it; again just a thought.

Is it the same track every time?
If so which one?


I do not work here, but the benefits are still awesome
Make your sound your own!