Upper Marlboro, MD
A number of folks here have complained about Youtube streaming issues. I have been having this problem along time even with my new 50/25 FIOS speeds.
After researching the issue on the internet, I have found a solution that works for me.
1. Play a youtube video
2. Right mouse click and go to settings
3. Uncheck the box that says "enable hardware acceleration"
4. Click close
Ever since then, my youtube videos have been playing great with no buffering.