Audio stops playing for 1 second

Hi Pulse, how are you? Give me a question, please.
I use a Macbook Pro with Yosemite 10.10.5.
After I updated Rekordbox to version 4.3.1, it is often happening that a track is playing and suddenly the audio stops for 1 second and the program adds to the wave of the track that is playing, a silence, and the Silence on the monitor.
It creates this silence on the track. It's as if you pressed "MUTE" for 1 second and released, and in "WAVE" it appears as if you erase a piece of music. But when you eject and recharge the same track, it's perfect without the flaw. Sometimes, time passes without happening and suddenly it happens again.
Can you tell me why? Are there any fixes?

Thank you!