I had a similar issue last night.
the left jog wheel on deck 1 would stutter on its own, as if i was touching it, i was able to make it stop by disabling the vinyl button. i was able to finish my gig thankfully, but then ran into another issue toward the end of the night. the deck 1 pitch fader stopped responding and the songs for some reason, would auto pitch up/down DURING play if i were to drop a track into deck 2, like it was trying to match deck 2's track bpm for whatever reason.
but it could also be the fact i'm not running my vms4.1 the proper way.
8 out, 1 analog, 2 usb, 3 usb, 4 analog, and i have decks 1&3 on same channel(2) and 2&4 on same channel(3). using VDJ
I never had any issues like this with Windows 7, although i did have that scratchy sound issue once that people have also mentioned. i was able to just turn the unit off/on and it went away. might be the fact i upgraded to windows 8?
first thing though, im buying the most high quality USB cable i can find, does anyone have any suggestions? i want to fix this issue ASAP