The sync is actually working really well. I had to be quite patient with the initial sync but once done performance of DTTG is great and time for re-sync is quite reasonable.
My main observation now is the delay when trying to use Shortcuts with DTTG. If there is an easy fix then that would be appreciated; if not then it’s no big deal. The main functions of DTTG work well and I can just share to an indexed Dropbox folder instead of using DTTG shortcuts.