Slow USB transfer speeds

[rokytnji]

Well, My copies take longer from computer to usb than from usb to computer.

I find it also depends on the usb stick being used (Make and model and read and write speeds)

The usb port being used also sometimes makes a choke point difference.

The size of the file and file type also slows things down. 4 gig  .mkv is one good example usb 2.0 that chokes
So lot's of reasons why this can be happening.