* OT warning *

Quote Originally Posted by rohcQaH View Post
flash sucks and does most of it's work on your CPU anyway. It works for me until I try to use fullscreen mode, then it gets slow. I use youtube-dl to download the video, then watch it with mplayer. Works well, but isn't really "streamed" any more.
I can very much recommend this Greasemonkey script:
http://userscripts.org/scripts/show/41722

Happy watching!