I've never run into anything like this before.
We are seeing an issue with one of our websites. Pages of the site load extremely slow. However, this is only when you type the domain name into the browser. If you use the ip address of the server then the pages load very quickly. The difference is not small. With the IP address, a database intensive page will load in under 10 seconds. On the other hand, with the domain name the same page can take as much as 10 minutes and in some cases the page just stops loading.
Any help or guidance appreciated.