I’ve been using OBS to live stream church services to Facebook live. I’m running an audio mix out of our Behringer digital soundboard directly into our Camera. I’m using a blackmagic intensity shuttle and a Sony Handy cam. The intensity shuttle runs HDMI out of the camera into it and then USB into the computer. Up until recently, I’ve been using my MacBook Pro and have had no issues. I just put a desktop PC in its place and immediately I’m getting a horrible audio buzz when trying to stream. If I go back to my MacBook Pro, the buzz is gone. Can anyone give me some advice?