If you haven't given Setstream.io a try yet I highly, highly recommend it. I've been using it for the last few months and the latency is stunning (less than a second) and it has a few different codec options. Their site has a lot of resources for color management and the best way to send the signal out of your machine. I can hold my iPad Pro up next to my Flanders and I'm stunned how close they are. I've even been able to evaluate grain on the stream using VP9 and a cranked bitrate. It's obviously still a little chunky, but it's a huge improvement over Zoom or YouTube/Vimeo.
