I have a problem that even when nothing is playing in logic the master channel will create this horrible buzzing sound. I am just trying to setup quadrophonic surround with dolby atmos but no matter what I try (apart from disabling the atmos plugin) does it go away. It is only in the front speakers and when the track is playing it stops but as soon as you stop the track it comes back. The first few times after loading up the project and playing the track it won't happen but it will start doing it around the second time you play the track. I am using the latest version of MacOS Tahoe and logic 12.2 but it has been happening since when I first tried to do it a couple of years ago.
UPDATE: It has seemed to have fixed itself since I added the downmix plugin but I am not sure if it will come back or not.