DN-S1000 Timecode issues

[MaxEater]

Hi guys !
So here's my setup.
2x DN-S1000
Numark M6 USB
NI Audio 4 DJ soundcard

I want to use timecode with whatever traktor/vdj.
I set everything correctly (I think cause I shouldn't have any problems) and when I start a track (on TSP or VDJ) the track starts to bug and skip for maybe 5 seconds and then goes ok until the next bug..

My cpu is good and everything i looked trough the net cant really find the same problem as me so if someone could give a tip ?

[Scalage]

Increase latency.