Hello. I can't seem to find any post with this problem. I'm on Sierra 10.12.6 Mobo GA-H270m-D3h Realtek 892 Intel i7 7700 Audio works fine until suddenly stops working. If I unplug and plug it on the headphone jack it works again and if after that I go to the mobo it works too. Working with Premiere Pro. I'm also dealing with some framedrops during playback (audio and video) also on premiere or in youtube. Maybe it is the same problem. Please help!