Which is why I refuse to buy the 4 tuner model. The more tuners a box has, I've noticed over the years, the more problems it has. My best tuner reception box has just one tuner, costs $35 and the simple oxe hasn't failed me yet (and it never heats up). As far as I'm concerned, the Tablo's tuner (and its configuration) is its Achilles heel.
If needs be, when my Tablo dies, my strategy will be a DVR for each room. Something like the CM Stream+ with HDMI (never mind the wifi crap). If I need to complete watching a show in another room, I'll simply take the USB stick with me from one room to the other (I do that with my simple oxe box which uses a FAT32 partition playable on any device). The "servicing whole house" thing from one point is just not worth it. And I can always record the same program in each room.
Even computing experts are seeing Moore's Law failing (i.e. packing more and more elements densely into one box).
Since the Stream+ is an Android box, I may even put something like MiniDLNA on it and stream recordings between boxes.
The simpler the better...KISS Let one box do one thing. Need more things done - get more boxes. This way a box doesn't strain at resources, bottlenecks, software complexity and horses pulling in multiple directions.