1st play with Engine 2.0, so glad I didn’t load before Saturday’s gig. Quite bizarre how some tracks become tricky to mix as even when both tracks at same bpm, or even synced, one appears slower. It didn’t happen on majority of my practice set but must have been easily 20%.
Perhaps if you struggle to search the forum you will find that this problem has already been reported by many people: look here 
Thanks DjAj, I should’ve searched forum - here’s hoping for a quick fix from Engine DJ (should never have been released)!