I use Tablo Preview on my 2019 Sony TV. I use wifi from my fairly recent Bell Hub 3000 which uses both 2 and 5 MHz.I see a value of -35 db for the wifi signal at the Tablo location. Router and TV (and Tablo) are about 15 feet apart with just an interior wall in between. I live in a detached house, am the only user and I do not see what can create interference.
Sometimes I get messages about not loading videos or the image pauses every second or so. Lowering the live resolution does not seem to solve the problem.
But if I de-install the Tablo Preview app and reinstall it, the problem disappears! I can then watch Live TV in the highest Tablo resolution. For a few hours or days anyway!
Am I the first one to report that?