I am having trouble with my XDJ RX2 while in performance mode. I have issues where the sound distorts for a second then resumes as if nothing happens and then issues where Rekordbox freezes and I have to replug in my USB into my laptop to fix the issue. I have tried using a powered USB 2.0 hub, adjusted every power setting I could think of, adjusted the latency to the point where scratching was impossible and I'm still having issues.I didn't have any of these issues with my Traktor S4 while using the same computer. I'm using an Alienware 15 with Rekordbox 5.2.2 and XDJ RX2 firmware 1.23.
I have also been having these issues since I purchased the XDJ RX2 back in January.
The standalone mode works fine.