Comment 6 for bug 1851985

I think I know how to make a safe fix for this specific case:

If sync is on and only one deck is playing, that deck should be the master and stay at the same playback rate and the Internal Clock should follow it.

Or more generally: Internal clock should only be the master if more than one deck is playing. If one deck is playing, it is the sync master.

Once the second deck starts playing, the bpm will lock and they'll play in sync.