Suspiciously, as I went to enable diagnostics in the app, the thing started working for the first time since i've had the new Cube in a few months. (not regular usage of course, but the adhoc tests have always resulted in the same behavior until today.

Quatro: 107223F0
Extend: 105232E1
Connect: 1043FB3C

I have a new-generation FireTV Cube (Model GA5Z9L) that renders the first 1 or two frames of a channel and then freezes the image. Going back to guide and selecting the same channel will render an updated frame and immediately freeze the image. I have 3 HDHRs, connect, extend, & quatro, and i've ...