AMAZING!!!!
It's NOT the Real Tracks...but the TEMPO of the EXPAND that will cause it to double on the fly.
140 keeps it at the original tempo....145 becomes 290.


So Matt's "Good theory but I don't follow why it would be a problem with RealTracks. We now have the ability to halve or double RealTracks"....was right on the money

Sometimes it takes time for answers to appear. Please feel free to test this out for yourselves. But the answer now seems to be...at a tempo of 145 or above, ....changing expand on the fly...doubles the tempo. Thanks to all.