Im trying to fully understand the situation, bear with me...
So, the picture freezes like its paused, but the mini otherwise continues functioning?
(i.e. you can hit the tivo button to pull up the menus, etc)
You cannot resume playing of the particular program you were just watching, or any program when in the frozen state? How do you return it to functionality? reboot the mini?
Are you using Moca or ethernet on the Roamio?
I hope you dont have the Roamio setup as a moca bridge, with ethernet connected and moca enabled. That causes network asplosion if you are using Fios's moca bridge as well.
If moca, on any of the boxes... in settings, in the networking/network status, are you seeing any moca errors? what is the phy rates?
just exploring possibilities here, since i don't recall seeing anyone complaining of this before.... and since it stayed with the location, its strange!
are you running 20.4.1 or 20.4.2? (.2 is being rolled out)
.2 is a complete re-build of the software from top to bottom, just making sure you didnt get that and are seeing some brand-new problem before unseen...
-Roamio Pro/Slide Pro
-Stream (Gotta go unplug the sucker one of these days!)