Macbook Pro load speed

Hello, I am a relatively new Macbook Pro user. I've had it for a few days now and something that I've noticed is that it loads videos very slowly. Especially HD videos from YouTube. Am I doing something wrong? Help?

P.S. I know Hd videos load slower than SD. But even my hand-me-down 2008 Toshiba can load faster than this thing. :/