I'm on the Direcway Home plan and I have no problems loading any pages here. Within 2-3 seconds everything is up and ready.
You might check out your Proxy settings, make sure it has 192.168.0.1 in the HTTP field and PORT 87. Click tools, internet options, connections, LAN settings and then click advanced within the Proxy field. Direcway requires a Proxy for the accelerator function. Without it, pages will load slowly. After you set up your proxy you'll notice that if you go to a secure site, you'll notice it loads slower than non secure sites, that is because it can't use accelerator on secure pages.
Try this out and let me know, there's a few other things that could be going on, but it sounds like that is what the problem is. You should have those same proxy settings for every computer that will access the internet over your Direcway system.