Just as a non-related test I rebooted the wallet and measured the governance sync time - and it was only about 30 seconds total (to reach mnsync status 999),  and it consumed about 75k of bandwidth!

This is great, and I feel we must give credit where credit is due - the deterministic sancs are behaving much better than the old hybrid branch.

Ill go as far as saying, I think we got very unlucky when we picked the hybrid version.  We didn't have a horrible time with PODC 1.0 when we used the September 2017 branch of Dash.  But we had a horrendous time throughout most of 2019 with the hybrid branch.  

Lets look towards a bright future with DM, concerning reliability (and with chainlocks, and we are looking forward to a bright fork-free future also!).