Ok I submitted a support request. We'll see what they say. Enough of the site's code is on that CDN that if it isn't working most of the site will appear slow or non-functional.
That same image can be pulled from CP directly:
https://forum.calgarypuck.com/custom...atar4277_6.gif
However it's super small so probably wouldn't show much in terms of speed testing.
I also tried a test on the forum with Pingdom and it says the site loads in 970ms, so definitely something strange network wise going on.