Xdjxz click noise when connected to rekordbox

Hi friend, yesterday connected xdjxz by usb to rekordbox, and when play track i Heard noise click on each track played. Increased also buffer, but I haven't solved problem. Pc is I7 32mg of ram rekordbox not updated at last. I've never had this problem. I always used the rekordbox link. With usb drive, no problem.