I had this problem too, until today. Please check this bug. At first do all the upgrades (Kernel to latest .17 version). After that Youtube just ran smooth in Fullscreen. Flash Version 0.124.
-- flash player fullscreen - very slow https://bugs.launchpad.net/bugs/218483 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
