I deleted the bad recordings, so I don't have a video to show of it.
But, to try and explain the the lag, when you're watching a show, it pauses/skips every couple of seconds. For example, you'll see/hear about 2 seconds of show, then it will pause/stutter for a second or two, then repeat constantly.
So, you hear two seconds, miss 1-2 seconds, hear 2 seconds, miss 1-2 seconds. This is video and audio, you can't really understand the words and it's very jolting to watch. Basically lag.
I haven't tried watching shows from the computer, i just watch via the Apple TV.