Your CPU is being overloaded attempting to process the NDI feed. When it can no longer keep up by increasing buffer usage, the buffer empties and audio stops.
08:06:08.182: adding 64 milliseconds of audio buffering, total audio buffering is now 320 milliseconds (source: NDI™ Source)
08:06:08.852: adding 21 milliseconds of audio buffering, total audio buffering is now 341 milliseconds (source: NDI™ Source)
08:06:08.980: adding 106 milliseconds of audio buffering, total audio buffering is now 448 milliseconds (source: NDI™ Source)
08:06:09.619: adding 362 milliseconds of audio buffering, total audio buffering is now 810 milliseconds (source: NDI™ Source)
08:06:09.898: adding 21 milliseconds of audio buffering, total audio buffering is now 832 milliseconds (source: NDI™ Source)
08:06:10.075: adding 21 milliseconds of audio buffering, total audio buffering is now 853 milliseconds (source: NDI™ Source)
08:06:17.779: Max audio buffering reached!
08:06:17.779: adding 106 milliseconds of audio buffering, total audio buffering is now 960 milliseconds (source: NDI™ Source)
08:10:11.722: fill_buffer: AudioQueueEnqueueBuffer failed: -66632
08:10:11.722: fill_buffer: Failed to enqueue buffer
