I did a lot of troubleshooting on this. I used 2 systems my Mac with macOS Sierra 10.12.6 and Laptop with Windows 10. (1709). I use Firefox so I started with it. Will not detect output see screenshots. Mic are detected but didn't work. I had a player login and he was using a Windows 10 laptop and using chrome I could see the video but he could not here me. I created new accounts on both my computers and set up new copies of Firefox and same issue. I installed Chrome and the output and Mic now detected and are working. Mac with Firefox Windows 10 Firefox Mac with Chrome Windows 10 with Chrome Permission was given to Firefox to use the Mic and Camera on the Windows 10 PC and Mic on the Mac.