There is an easy solution to the video sound. When you click "share screen" you have to check 2 boxes in lower left hand corner that say “ share computer sound “ and “Optimize for Full Screen Video Clips” Then the videos play perfectly! Zoom is the only video conferencing program that does this.
Hope this helps. Have a great day,
I know that is the solution for a desktop, that option is not there on my iPhone zoom app - at least I haven't found it, and I've looked.