200ms is not "very far apart". I routinely use it on 350-450ms connections with no issues — it easily saturates my 500 Mbps link. Although in your case I would

200ms is not "very far apart". I routinely use it on 350-450ms connections with no issues — it easily saturates my 500 Mbps link. Although in your case I would probably use ZFS snapshots through syncoid, they'd be much more efficient than anything else.