Simulive playback is horrible

The playback of Silmulive videos is pretty bad.  The video and audio are barely off, and it seems like it is playing the video at 15fps.

I tested this many time and in many different ways and on many different devices.  Still, the same.

Then I went live and played the video in a live webinar.  No problems. It worked perfectly.

It's just the Simulive.  

I assume, since this is a production-worthy feature of Zoom, that it had to be working at one point or it's just not working for me or...?

I took an 11 second video of it to show what is happening:

https://drive.google.com/file/d/1N3z9YrlGU8JoHLmR74WEDOwsezg2pXtw/view?usp=share_link

I'd love any help to make this right.  Thanks.