Very slow exporting from recordbox to usb

I had a dj gig last night and i was putting my music onto the usb through rekorbox. I have a mac so my music is off itunes but i made a playlist in itunes for it and transferred it over to the usb. It had maybe 60 songs. I think it took about 4 hours to do it. This has happened with it ever since ive started using rekordbox.

Is there anything im doing wrong or that i can do to make it faster?