Hi Al, Thanks for the quick response.
I checked the MathJax URL and it is set to https://cdn.mathjax.org/mathjax/2.7-latest/MathJax.js. I have not changed this setting. However, when I run the course and look at the developer console, I see the following warning: WARNING: cdn.mathjax.org has been retired. Check https://www.mathjax.org/cdn-shutting-down/ for migration tips.
I will follow up with this and get it resolved, but I would think that the this would affect everyone regardless of the number of simultaneous users. If two users are hitting the system it is fine. Once the third and fourth login, then the slowness starts.