Rekordbox and 2015 MacBook

Hi all looking for a bit of help here I have a MacBook Pro(see pic) and my rekordbox keeps stopping for a second and tonight has just completely stopped twice during a mix recording. I had the laptop plugged in to power and also no apps opened and disconnected from the internet. The glitching thing has happened since I got the flx4 and the memory is almost full(6gb left in HD). Can anyone advise me if my MacBook could be the cause. I am updated to latest version of rekordbox. Any advice would be helpful.

Hi all looking for a bit of help here I have a MacBook Pro(see pic) and my rekordbox keeps stopping for a second and tonight has just completely stopped twice during a mix recording. I had the laptop plugged in to power and also no apps opened and disconnected from the internet. The glitching thing has happened since I got the flx4 and the memory is almost full(6gb left in HD). Can anyone advise me if my MacBook could be the cause. I am updated to latest version of rekordbox. Any advice would be helpful.