Maybe this is among the known issues for 9.1, but last night I recorded how I met your mother on my cable CBS HD. It was somewhat pixelated. I went to live TV on the same channel, and it was now REALLY pixelated, to the point of being unwatchable. I switched to the antenna feed, which I currently only use for a few stations, and it was crystal clear. All other HD stations I've checked seem fine. Help?