I'm teaching art instruction online and use OBS to combine two views (one from a webcam on my MacBook Pro and one from a digital point and shoot connected to my laptop via Elgato's Cam Link 4K). About two hours in to my three-hour class, OBS will simply stop working, leaving my zoom screen black. If I go to OBS, everything looks right and OBS is still showing up as a camera option on Zoom, but my speaker screen on Zoom is black. I'm using the most recent version of Zoom. Is this a Zoom issue? An OBS issue? Anyone else experiencing it?