Why Do Videos Take Longer To Load On My Computer Than Other Peoples?

I can’t get cable in my dorm room so I use the internet to watch most of my television shows. For some reason it seems to take longer to load videos on my laptop than other people’s laptops. I have a brand new Macbook and there’s no reason why it should be running so slow. So I was just wondering if anyone knew what was causing it to run slower on my computer than everyone else’s. Or if there’s something I can do to make videos load faster on my laptop. Thanks.