It appears that the problem may be related to both the Tascam driver and new audio features in Band In A Box. Unchecked the track setting with base tempo matching and it worked to sync 3 times. It still says 32 bit audio but works??

I am in the process of trying the latest patch which has audio fixes. It was taking a long time to download.

If it starts working reliably I don't care if it says 32 bit.

I am also considering trying a new interface. Have wasted a lot of time.