On Demand Unwatchable

I'm in the Wichita area, Cox Central Kansas if that helps. Since this morning over half of everything I try to watch On Demand is pixelated so badly I can't even guess what's on the screen, plus there's no audio. It's like the signal interruption during an extremely bad thunderstorm, but there's no storm here. I have the Motorola DCX3200-M receiver and recycling it changes nothing.