Imo there are problems for sure.
The OG is solid as a rock, master or slave.
When I tried syncing the Tracks to the Rhythm or vice versa, its noticeably looser.
It was bad enough that trying to use the Rhythm for drums and the tracks for melodies sounded bad for uptempo music. Okayish for other stuff.
There are also tempo problems when saving. Sometimes when saving project/session the clock messes up. Its bad enough that I wouldnt save live, which eliminates some tricks unfortunately.
Also when pressing shift to immediately cut between projects, sometimes leaves a tiny gap. Its really a shame as its such a wonderful thing to switch projects immediately like that.
Its weird as Novation are normally great! Plus the OG does all of that without problems.