Extreme tiling when watching premium HD channels.
I get tiling on two of our boxes when there happen to be 3 or 4 of them on at once (worse when it's two DVR boxes). This has happened for some time where it would tile out and correct in a decent amount of time, but I absolutely lost it this past weekend. It happens most notably on HBOHD and happened for over a minute. I've called and complained about this in the past and they sent a tech out to check the lines, and it turned out there was a line that was bad, a company came out and fixed it and that helped it, but didn't alleviate it. I've had the techs reset the boxes, and I've even cleared the memory (7 up/7 down) on it and it still happens. It's increasingly frustrating, I miss the punch line in jokes or the jokes entirely all due to the tiling happens to such a degree like I've got satellite in a hurricane. It also happens on Fox Sports Oklahoma (during football & basketball games, even on the replays hours later).
It's forced me to watch the channels in non-HD on an HD box because the tiling isn't as bad - yes it doesn't even fully go away on the non-HD channels.
I look to you for an answer. Please assist in this matter.