Pixelation problem

Also, I tried unplugging everything and then plugging it back in. No change. 

As soon as I add one device I get pixelation. 

Only really able to do it with one tv and That worked. But once I plugged in other items it stopped working. Prblem

is second tv is upstairs and connected through two switches so hard to direct connect. 

Hd1080 content. But I am getting pixelation on the tv that is direct connected to modem even though that tv doesn’t go through switch.  

The issue may be the switch.  Can you (temporarily) eliminate all the switches but one, and try each switch in turn?

There is no way to connect a second tv without going through a switch. The run is too long. 

I'm not trying to eliminate using a switch at all, but instead trying to eliminate each particular switch (as you did by removing all connected clients, only this time with the switches) to see if a particular one of the switches is introducing issues either by itself, or when clients are attached to it.

Do any of your switches have Wireless Access Points or Routers attached?

Mine also pixelating, boxes and Roku with app all pixelating. WiFi connected and hard wired ..no difference.

My receivers also pixelating three AT&T TV receivers and Roku with AT&T app installed all pixelating.. also have AT&T fiber 1000. Wi-Fi and direct hardwire connected doesn’t make a difference.