USB drive transfer speed drops to 0

[Lionile]

So I got a new usb (Kingston DataTraveler 100 G3), and I wanted to transfer some songs just to see it workin, and it's great, it gets going....aaaannd it goes down to zero. I'm thinking ok, some problem with windows, maybe some file was corrupted or something, it will just continue...but no, for the whole transfer it gets up to like 20 MB/s and then just drops to zero again, and goes up, you get the point. Now I saw some post online complaining about the same thing and it was also a similar kingston usb, so maybe it could just be that it's a shitty usb, but since I don't wanna believe that...not yet, I wanna ask you guys for help, thanks to anyone who answers.