Tivo Roamio & Tivo mini sync problem

I'm using a Tivo Roamio with several Tivo mini's over a Moca bridge.

I often watch the same show in multiple rooms when I'm working. There is about a 1 second difference between the two units. I have been unable to solve this problem. I was running my Tivos over a 1GB ethernet network. I purchased the Moco unit hoping it would solve the problem.

Anyone experience this or have any suggestions for a fix?

BTW - I've done all the standard troubleshooting.

Tivo Roamio & Tivo mini sync problem