What laptop (what CPU and how much memory). And what resolution is the video you're trying to watch?
If the video resolution is greater than 1080P then most likely your laptop can't handle it. Laptops are a compromise between performance and portability.
I have an Intel i7 desktop computer... It plays 4K video flawlessly. I also have an Intel i5 laptop. It freezes and stutters badly when playing 4K video. High def vidoe requires a lot of horsepower to play.
PS Out of interest, I have some USB 1 ports on the i7 desktop. I can still play the video no problem from the card. It's not your USB speed that's bogging things down.