I have the same issue. The song has a short pause each time the chord page refreshes to the next group of visible bars. I have tried the fixes mentioned but it still happens. I am not using layers and it's just the default chord sheet. I have done a factory reset also. At first I thought it might have been the two instances of Amplitube 64 bit bridged on the guitar tracks but after removing them the issue remained.

At this point it's just annoying as I export all my BIAB tracks to my DAW and the WAV files are not affected with the pause. The 2014 version worked fine and the problem only showed up with the 2016 upgrade. I am sure PGM will get it sorted out but It is a problem that should be addressed sooner than later.