Unless you actually know what was going on, shove your assumptions where the sun don't shine.
This was the first bad HD streaming experience in years and the connection has performed without problems throughout the long easter weekend as well (over here that was an extended weekend from Friday to Monday). HD streams by other sites didn't cause any problems either, the problem was reproducible across tabs and browsers and using the web developer tools you could practically watch the stream arrive too late, piece by piece and with not nearly enough overlap to provide seamless playback.
If it looks like a duck, walks like a duck, quacks like a duck, ...