DDJ1000 (REKORDBOX) Latest built with ddj1000

Just got a DDJ1000 for gigs. I notice there is a weird digital  sound when you pull back the song (file) back or forth whether  your scratching or just cuing up the song with the jog. My friend has the ddj1000srt. i plugged my laptop into his and it works like it should. Before i get any replies i did optimize my pc for Djing.  I have updated all my drivers. this issue is only when i move the jogs back and forth . any fixes coming soon? the interface 2 does not have this problem running on my laptop