I am not positive it is the spectrum service or if it could have something to do with the TiVo. There are a few shows that have been coming in horrible since new years. Not all shows or channels are bad and its happening rarely. Resetting everything seems to fix it. They start out fine, and just randomly start to digitally pixelate. It takes a few minutes, and the picture gets so bad the screen is half black, and it will lose audio. I have noticed this on live tv, and on a couple recordings. Its doing this on live and recording, and at least two different channels. I don't know how to diagnose this, or see if I can confirm whether or not its the TiVo or spectrum. Could I be having a tuner go out? Is this a signal coming in issue? How do I proceed to fix this??? Thank you.