Which visit, Bill - the one at 9:07 am or the one that just happened, starting around 12:25 pm? I was doing something I couldn't stop during the 12:25 visit, but it was great fun watching them move sticks and bump into each other! I didn't notice distortion during either visit, though I had to leave during the first one.
One thing to check - YouTube can reset the quality of the stream to low res - you can click on the gear that appears in the lower right when you hover over the stream to see if that's happened:
I'll try to have some pictures from the recent visit soon.