DJM900nexus2 and Windows 7 issues using traktor scracth pro

I recentle purchased a djm900nxs mixer.

Using it with mac laptop and traktor scracth pro everything works fine. Audio device dtected by traktor is DJM900NXS2.

However using windows 7 laptop with same traktor version for pc, when moving the volume faders decks make similar behaviour to Cue, It seems channel volume to be some kind of CUE function.

Can someone tell em if something similar happen to them?