Hi all. We just switched from 5 old lifetime service Tivos to HD with Roamio Plus + Minis. Lots of promise, but lots of pain. I've studied a ton of past posts here about MOCA networking issues. Enough to realize I'm finally lost on where to turn. Network: Roamio Plus, 5 Minis, MOCA network, Comcast Router DPC3941T, with Comcast router generating the Moca network (Getting the router to generate the network required having the Comcast central office turn it one and plugging ethernet into the back.) Symptoms: 60% of time: works perfectly. Sometimes for a couple hours straight. 30% (randomly) Mini loses connection with Roamio--cannot watch live or recorded shows 10% signal exists, but unwatchable because video pixelated and sound broken When Mini loses connection, it can often reconnect immediately after returning to Tivo Central and going back to My Shows>>Resume. You can tell whether it will work immediately because TV show icons will be visible at the TOP of Tivo Central. If the failure remains, it will not show the icons and say something like "Connect connect to" Roamio at Top. When errors are visible, I think they vary between V87, C122, and maybe one other. If it will not work immediately, it may not come back for minutes or even hours. It can often come back "by itself" with no action. If still in Tivo Central, you can tell because the TV Show icons at top will return. Restart is NOT needed to get the connection working again, but sometimes a restart seems to help (of the Roamio Plus and/or the Mini) When it says the Roamio has lost connection to the network, the Roamio is actually still functioning on the TV to which it's connected directly via HDMI. Sometimes, the Roamio recording seen directly via HDMI also has pixelation. But the Roamio with direct HDMI connect never seems to say "Lost connection to internet." Biggest remedy was bringing out an extremely conscientious Comcast person who put in a new 1 Ghz amplifier and new 1 Ghz splitter and new POE and redid almost every cable connection in the house (with great complaint that previous Comcast person had not done quality work). Before he left, everything worked great. But the ~30-40% failure rate described above started almost immediately. Tivo Tech support, in multiple calls, says they are absolutely sure the problem is the 1 Ghz amp and splitter. They claim absolute confidence that switching to 2 Ghz amp and splitter will fix everything. But discussion on this board (and the experience of the Comcast tech who came out) indicate this isn't true. Especially since the 1 Ghz amp and router are now new and presumably high quality. Either way, Comcast did not have 2 Ghz equipment. Options I can imagine--but I'm totally guessing: Assume it's not the cable endings (which they just replaced) but old wiring and have Comcast rewire. Expensive because they can show the signal is reaching the endpoints now. Turn off the MOCA generation from the Comcast router (by unplugging ethernet?) and tell the Roamio to generate the MOCA network. I don't really know what I'm talking about here, but I understand the Roamio can generate MOCA with no help from Comcast. Maybe it's a higher quality MOCA network? Replace the 1 Ghz amp and splitter with 2 Ghz amp and splitter (this is the Tivo Tech support rec'dation). I don't know where I'd get these, but assume I can. And as noted, other threads on this community say it isn't needed. Assume something is wrong with my Roamio (but odd since it works 70% of time) Accept the $1,000 loss and switch to Comcast DVR (don't want to do this for obvious reasons!) Obviously, these are totally different directions: blame ... the Tivo, the network hardware, the network generation, the cable h/w, etc. Please advise on where you recommend I start!