Tired of MOCA problems with Roamio

I have a 6 tuner roamio with 3 minis. Pretty consistently, like 3 times a week, the network goes down. None of the minis can connect over MOCA. Stream to iPad still works and the roamio still works. It takes about 4 reboots for the roamio to start working again.

I've noticed that the minis can all talk to each other by looking at network diags. They just can't see the roamio. And can't get an IP.

I've tried setting all to static but that does no good. The issue seems to be with the MOCA controller in the roamio. All coax is brand new runs in the house as of about 18 months ago. I've put in a POE, set the adapters to statically use a channel, rebooted everything, etc.

Question 1: if I put in a standalone MOCA adapter on the network, what changes would I need to make to the roamio? Just unplug the Ethernet and tell it to just do MOCA? Will the adapter create the network?

Question 2: if the MOCA adapter in the roamio is truly the problem, would this help anyway?

Any other ideas? I'm about over it.