Reply to Midi jitter or Midi crosstalk?

Hi, I was practicing with my numark mixtrack todaywhich is mapped to traktor pro 2.6.3. In mid-set I went to use the browser knob and the pitch fluctuated on playing track. What has browsing for a track got to do with pitch control? Thank god sync was on. I used it to control this issue. I did not want to risk manually beat matching with this issue.
Also, when pressing cue button, tracks played instead of being cued.
What is going on here?
I am believeing of using an external mixer and X1mk2. Should I do that and ditch the numark?, I'm getting the intuitive sense that I should do that.
Help please and ty guys. Setup specs below:

Toshiba satellite , 4gigs RAM, 2.3 gigz i3 Pentium processor.
OS, Windows 7 64 bit. Home Premium
Traktor Pro, legit license, Ver. 2.6.3.
Interface: Gigaport AG
Controller, Numark Mixtrack.