The load time of the site depends on several things, not only the server or the website but even the user connection, the browser,the modem or the pc.
I've done some test and I see a medium time of loading of 2,5 sec with cache and 3,7 sec without cache in normal pages.
What can slow down you navigation, are pages where there are a lot of images in post. Those images are on a several different server and are not cached.
This mean that in a page full of images your navigation will be slower because you are downloading everytime these images.
About images, gif are normally heavier then jpg or png, so the slowest pages on E are the one with more gif.
If you have a lot of gif in your PMS you'll have the same performance issue.
To speed your navigation you can:
- try to change your layout options to show or not avatars and signatures
- use a faster browser (chrome, firefox, safari,opera)
- check your modem, connection and network card
- get a computer with an updated os and good/modern hardware