As well as the great information in Matt's post, a recent addition to BIAB is also worth trying.
This is the "Auto-Fix Sour Notes" option.

To access this...

1. Right-click on the faulty track (the Bass track in your case).

2. Select "Track Settings".

3. Select "Auto-Fix Sour Notes".

4. Unfreeze your faulty track if it is frozen and regenerate the song so that the setting can do its job.

The image below may help explain things.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
sour notes fix.JPG (82.75 KB, 268 downloads)

MY SONGS...
Audiophile BIAB 2025