CONTROLLER POPPING SOUND

good day pioneer team am using an 2012 macbook pro retina with 750SSD along with 8GB memory i discovered when streaming the audio become very distorted whie am going live stream 

but the external output is fine it only happen when you streaming or recording using the streaming programme the controller am using is a DDJ -SR i connect the DDJ-SB2 and it works fine so its not the computer issue i also updated the firmware of the DDJ SR and it still distorted if you send the signal into another computer from the master output of the controller its work fine so am seeking the solution to rectify that problem