As for PGMusic site being slow;
those speeds are measured at a highly available and beefy server used for the testing. Most likely it is fairly local and close.
This means a different Route than it is to PGMusic.

The couple times I found the site slow I did a TraceRT (trace route) from the command line and both times found it was some issue out on the internet where my traffic was being routed to Quebec Canada instead of Chicago (which is how it normally went at the time and Quebec was literally the wrong direction) and then back out west and somewhere down the route a relay was really slow.

Wasn't PGMusic's fault .. more of just an internet thing. Who knows, maybe they had a relay down somewhere and rerouted traffic best they could, but for me it was a temporary inconvenience.
Other sites were fine, it was my route to PGMusic that was most affected for my use/observation. And mainly due to one given 'hop'.

Just an idea.

I do not work here, but the benefits are still awesome
Make your sound your own!