I am using OBS to record church service, recieving sound from the sound system and sendign video to both youtube and screens via HDMI splitter. My soudnd the past few weeks has been bad and I realized I am only get fuzz, rebound echo when the HDMI is plugged in. I have disabled audio output of HDMI in settings no change. Swapping out the cable is difficult as it is long and in the ceiling so wanted to see if anyone else had other ideas first.