DDJ sr2 music stopped

Hi guys i have DDJ SR2 

macbook pro (Retina, 13inch late 2013)

High Sierra v10.13.5

2,4 GHz intel core i5

8gb memory

serato dj pro 2.0.3

Yesterday i setup my system, connect controller to the receiver with XLR cable. After one hour playing, the music stopped. The wave bar was moving very slowly but now sound, the audio drop out light was orange and the and the cpu meter was 1/3 filled. I restarted serato dj pro and reloaded the same song, and again the wave bar was moving slow  and no sound after pressing the play button. I closed the system, refreshed the pRam memory, option key cmd P and R key. Started serato dj pro and after 5 songs the music stopped again but now the wave bar stopped too and the audio drop out meter was red, cpu meter was 1/3 filled. I turn down the volume but there was still some distortion sound going out after pressed the stop button the distortion sound stopped. Can anyone help me to find the problem?

After that i restarted serato again but now I used an other usb cable and connected this with an other usb port, i dont know if this can be the solution but i really need to know what the problem is. I had 40 gigs with the same setup and no issue at all until yesterday.