Hi John,
I have managed to replicate what might be related to the behavior you are experiencing. Here's what I did...
- create an 8-bar song
- set the tempo to 140, key C, choose and all-MIDI style
- set the tempo of bar 7 to 80
- leave the number of choruses set to the BIAB default of 3
Now, when the song repeats and enters the second chorus, it plays at the slower tempo. I'd imagine that this is by design because choruses 1 and 2 are independent of each other and chorus 1 leads into chorus 2.
The difference between my behavior and what you have experienced, is that when I regenerate (with all tracks unfrozen), the song will once again play at 140. I note that for you, this has not been the case. How many choruses do you have your song set to?
I posted this just in case it helps with your investigation.
Noel
P.S. I use Vista 32-bit and have no issues with the tempo in the way that you've describe.