DDJ-RB audio stopping. Sound card issue?

Hi,

I'm running DDJ-RB on VDJ8 (controller, software and laptop all running latest drivers etc).

There's nothing on the laptop apart from VDJ, Rekordbox and music.

The CPU ticks over nicely (20%ish), audio loads quickly and the screen runs smoothly whilst running the DDJ-RB (happy days).

The only issue we have is randomly, out of no-where the audio will stop for a second or so and resume. (The track continues playing and audio levels still show on the controller. Green, orange...) then audio comes out the speakers again.

It's running on the DDJ-RB sound card (ASIO), is there something conflicting with this and a way to stop other bits in the background interfering with it?

We have another controller by another brand running on WASAPI and has no issues.