In Zoom’s video settings I have “HD” checked and “Original Ratio” Unchecked". I played with both of these settings in one of my problematic calls and it didn’t seem to make a difference in getting rid of the green.
I mentioned that the problem went away with Logitech’s “LogiCapture” app and can now also confirm that the problem doesn’t appear when using the latest version of OBS.
I’ll try to get you some video stats from Zoom the next time I use ManyCam but to be honest, since teaching on Zoom is my business and only revenue stream, I’m using OBS for now since it spares me the green image difficulty that I’m having with this latest version. I’ll give ManyCam a try next time I have a family Zoom call and send you some stats.