I have a Roku 3 and had youtube on it for a long time. My complaint was that ALL the videos play back in the absolute lowest quality possible. I went to see that silly music video of the Korean guy doing that goofy dance and the quality looked like something from 1981. I’m pretty sure it was like 240p. And it’s not from lack of speed, I have 25mbit cable. When I went to my Mac I was able to watch the exact same video at 1080p.
The playback quality was so poor that I don’t even waste my time with it. Have they fixed that yet?