I just bought some Motorola MoCA adapters to get Ethernet to my Nvidia Shield TV, since both WiFi and powerline adapters are insufficient to drive 4K game streaming. Got it hooked up and streaming works much better, but then my AVR started losing its HDMI signal from the Shield TV at random. I messed around with some cables and it stopped and I went to bed, but using it today, it was losing its signal every 10-15 seconds. I unplugged the MoCA adapter and it stopped. Plug the adapter back in and it started again. So I'm certain that is it. Anyone have any suggestions? This never happened when using a powerline adapter, so I know it's not the Ethernet port on the Shield TV. I swapped out the HDMI cable and the Ethernet cable, no change. Put some ferrite cores on the ends of both cables, no change. Shield TV and AVR are already plugged into a UPS with line conditioning. The only thing that consistently fixes it is simply not using the MoCA adapter.