So I've got Windiws 10, I've plugged my USB drive into the slot (it's a USB3 port, but that shouldn't make a difference), it's set to use the Better Performance option in Device Manager, yet it still takes forever to copy Game.of.Thrones.S06E06.1080p.WEB-DL.x264.mkv at like 3mb/second. On my old lappy with Win7 it would've held a steady 20mb/second transfer.
What's up with that?