This is a relatively new phenomenon. Everything is up-to-date and the ATV was recently rebooted.
Turn to a channel. Watch it for ~40 minutes, muting all commercials.
The video starts to break up, then ultimately freezing.
Popping out and then back in to the same channel fixes it temporarily.
Anybody else?
Wired CAT6. FiOS 150 up/down, even over wifi. No problems using the STB.