XDJ R1 - High pitched sound bug when looping WAVs

Been having an issue with the XDJ R1. The issue occurs when I load a WAV file, turn on a beat loop (I wish it wouldn't auto play when i pushed it down) and then as soon as I hit cue to take it back to the beginning of the loop, I get a high pitched whine. It seems that adjusting the loop size even changes the pitch of the whine. I can seemingly only make this happen using WAV files. Anyone else?