We have a partner web site that we register people into that is extremely latent on our main connection to the internet. Since it is slow we have to unplugg it and connect through our metro connection that exits the internet at a data center 30 miles away. This 2nd connection is much faster.
The primary outside Internet connection runs through a firewall and switch. There was a content filter in the hop path but it has been removed. The secondary inside point to point connection is run to a backbone switch out to the internet.
The partner web site is the only site that has latency when entering data and uses aspx I think (I noticed .aspx in the true hyperlink at the bottom while the page was loading).