DJM - REC live stream problem

Hi, I have some issues with audio while live-streaming - it’s crashing sometimes (the quality of audio is good) and I don’t know why.. Video is okay, so it’s not problem with bad connection (I tried 2 different wi-fis and lte) and 4 dfferent lightning cables and still have the same problem.. Someone knows what’s wrong? Streaming via DJM-900NXS2 and 3x XDJ-1000mk2