REPOST: DDJ400 Mac Air 2015 Error (need help)

 Hi to all the community! Posting this because im having a "random issue" when mixing in my DDJ-400; i'm using a MacBook Air Early2015 (I5 1,6ghz; 8GB RAM).
 The problem happens while mixing, every 30/45 minutes on average, and crashes Rekordbox's sound and interface for 1 second (or less than 1 second), then the track continues normally. The ironic thing is that you CAN'T hear the "crash" in your records of Rekordbox. 
 An extra fact: this computer is ONLY used for DJing (i'm only using the 20% of the disk capacity).
 I'll appreciate any help or suggestion on this topic.

Greetings!