Microphone sound decreases and the mixer freezes

[rossvoltron]

Help, when I record a video, the microphone sound decreases and the mixer freezes after about half an hour of recording. And in the video itself it looks like the volume is reduced to zero.

 

[rossvoltron]

And about every half hour you have to turn off the microphone and then turn it back on for everything to work again

Here is the log