DDJ SZ2 jog led flashing

Hello Pioneer

Having problems with my ddj sz2, the jog flashes every now and then and gives me a 1 second audio drop out

ive changed my usb cable to a high speed usb 2 audio cable, but its still doing it

im running the latest firmware with serato pro dj

and latest ddj sz2 drivers 

my lap top specs 

16 gig ddr 3 ram

500 ssd hard drive

cpu 3,2 ghz quad core

nevada g force graphics card

windows 7 pro