Screen Sharing Recordings stuck 50% processing

Resolution: Found that we had a GPO disabling hardware acceleration. We have had that GPO in place for over a year but as of about a month ago this issue was reported.

Microsoft ticket: Opened a ticket and eventually had to self resolve, because they were initially responsive and then when escalated, unresponsive. They asked to close the ticket but I pushed back saying this should be made public knowledge. I am posting this because I doubt they will do anything and it will just get buried. 

The work around we found until the root issue was discovered: To have the camera screen on the same screen as you were sharing. Even then there were reports of that work around not working.