i'm not an expert so i'd like to know as well.
i haven't found a way to use synchron player in studio one yet.
the best option to me so far is to trigger my sound variations using macros (at least the main ones like sustain, legato etc), then edit the recording on a note by note basis for attack and release for example.
But the way sound variations work in studio one seem flawed to me when working with synchron.
For example if you have a a long sustained note that has soft attack and it starts as non vibrato going to molto vibrato with cc20, when it transitions to molto vibrato it will snap back to normal attack... unusable.
Also VST2 seems broken to me, if i record anything it will record my velocity and speed as curves as well, so my performance will be baked into curves. In VST3 this doesn't happen, which is how it should be.
VST AU has no GUI so unusable.
So i too would like to know how anybody manages to work with Synchron in Studio One.
On top of that any time there is a sound variation change my playhead freezes and skips so impossible to record cc curves..
Only way to get it working smooth is using VEP, but some of the issues still apply.