Tx for the reply. I have done both of these recommended solutions... hardwiring, and reducing the QOS. Neither worked. It is not buffering. It is exhibiting every 30 seconds, like clockwork, a pixilating thing. I have turned off every possible device in my house to eliminate the possibility of something causing this given it is predictable, every 30 seconds. Nothing. It only happens on the NBC signal. I have changed antennas, locations, hard wiring, QOS, and a slew of other things. No go. ANd it occurs on every device, not just a single TV.