One good afternoon, for a couple of versions I have experienced a problem with the audio, I have connected an audio console with 4 microphones and they enter the iMac. The problem occurs in certain cases as it begins to cut and as it progresses becomes annoying and incomprehensible. I thought it was my computer problems, but I already discarded that option, then I assumed that they were console problems and likewise discarded these and other options that have happened. Attached link videos so you can better appreciate the problem.
15:30 and more 17:15
In this example I used the latest version 4.3.1 and to solve the problem live I have to reboot the audio console several times until the normal audio returns again and stays momentarily or permanently. As I indicated it is ruled out that they are problems of the computer or console since to test I have carried out the test in another computer with different equipment and unfortunately the problem occurred again.