There needs to be a better way of doing things.
If you are using the BB Plugin in your DAW that has proper time signatures you need it all to fit and sync.
With ReaTrak the mid/wav/mp3/mp4-video tracks can be recorded in any time signature and then will fit that same time signature in the DAW.
I haven't looked into time signatures in Biab fully to see if something can be done or if it's in the too hard basket. Maybe it was just 4/4 3/4 originally and it's all set up for that so it has to be spread over multiple bars.
If I record a set of 120bpm 5/4 Drums Bass Guitar UserTracks then put them in a 4/4 template, load them into BB the will play 5 beats over the bar but the tempo would be faster so you would need to slow it down to about 100bpm.

https://www.dropbox.com/s/vfx1oaihh5v9fr6/BB-5-4-UT.mp4?dl=0