I have the same experience with this site only. I think the RCU host uses either slow servers or has a slow connection. It takes 30-45 seconds for the site to even come up for me almost always. Then for any given page to load takes 15-20 seconds.
The only other sites that are slow for me are sites that have tons of of scripted animation and such.
Most sites load up in the blink of an eye for me.
But for the entire time I've been a member of RCU it's always been a very slow site. Not a big deal. It's always been worth it.