XDJ RR USB Frack loading

Hi, I recently bought a XDJ RR and i'm still in finding Phase...

I was wondering Tracks start automatically while using USB Drive,

I mean when I select a track from my playlist, the track starts automatically.

Sometimes when i press the load to teck button for 2 seconds the track does not start automatically.

Using Recordbox there is no track starting automatically.

How can I setup my USB to NO AUTO START?