Watched a little bit of a peertube live stream for the first time this evening.. seems like the max resolution was 480px and there was still a lot of buffering and blockiness..
Also watched an owncast stream and I'm definitely more impressed by it, mileage is going to vary depending on streaming hardware etc. And I had some buffering and some low quality patches but when it was good, it was crystal clear.. looking forward to seeing how this processes.