Sorry to bump an old thread, but i don't know where else to go for help.
I recorded a short video today that illustrates one part of the problem (it also stops recording on its own, out of nowhere)
This problem first started when I upgraded to Sierra. I have now upgraded to High Sierra, which I hoped might fix it, but no luck.
This is a Hackintosh Computer (I specifically built it for the purpose of using it with logic, and it worked for years before up until Sierra where it broke)
This problem also happens in Garage Band, but not in Reaper (I don't particularly like Reaper tho, so I don't use it) So it may be core audio related?
In logic, the behavior is consistent (audio stops, drums only, then all audio again) for the most part, but there is no consistency in when it happens in a song. Occasionally I can get through the whole song without it happening, frequently it happens multiple times in a row during the same playback of a song.
Any suggestions?