Is there a way to put the custom/all CSS on the CDN as well?
I have noticed during load testing that all css files are fetched from the forum, rather than the CDN site.
The CDN is set to https://forums.cdnserv.sandydprod.net (you may have to set the URLs to show 50 at a time).
Then, scroll to the bottom and under URL content type load time distribution, and click on the text/css slice.
Scroll back up, and you will now see all the CSS urls highlighted - which are all served from the forum instead of the CDN