Live Stream Loses Audio After 1 hour

I am having an issue where after live streaming between 1 to 1 hour and 30 minutes the audio cuts out completely. I am using the USB port out into my iPhone with a USB adapter. I regularly gig and was hoping to use this board for streaming all of my gigs. Anyone else experience this issue and found a solution?

In my opinion, there’s a problem with the USB driver. I occasionally have trouble playing audio simultaneously on multiple tracks from my iPad. Sometimes it stops playing, and other times I hear an unpleasant “beeeeep” that only stops when I reset the USB audio on the mixer by changing the frequency or multitrack-stereo mode. After that, it starts playing perfectly again in a second, and sometimes it doesn’t fail again. It seems like a data corruption issue.