XDJ RX 1 USB Issues

Had my XDJ RX for over a year now, and no issues til recently. 

Firmware is the latest, 2.21 I believe, and Im sure there wont be anymore updates since the RX 2 is now out...

Ive tried SEVERAL USB sticks, cheap and expensive, little storage and big storage, and now experience issues such as freezing while browsing tracks, loading a track which results in being stuck on the loading screen, and some tracks skipping even though they are fully analyzed. 

Anybody have any solutions to any of this?