I installed a completely new Windows 2008 domain with a main + child setup, and DNS. Everything is working great except the internet. The pages come up but its soooo slow to load the pages. I need to refresh the page 3 or 4 time to load completely. I checked with ISP and all speeds are above normal. I can connect a pc directly to the router or network without the domain + DNS and it is working fine. Whenever I put the internal DNS it is slow and "page cannot be displayed". Since I need the AD for the network, I cannot change my DNS also.
What could be causing this? Any possible solutions.