New to Roon - Is roon the solution for multiroom when upgrading from Sonos?

Yes it’s a setting per device. In my setup I have The Naim Atom, Bluesound Node2 and 3 pi’s that all run Roon over RAAT, all but the Naim where in sync with each other so had to adjust the Naim to bring it in sync. Even then it tends to drift whilst all the others are rock solid. I put in a ticket about it but heard nothing back, even though they replicated the behaviour.