Slow internet with 2008 DNS

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.
rotanasupportAsked:
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wamanmaConnect With a Mentor Commented:
In this case, you can add additional DNS address along with your DNS address. This can be achieved by adding 8.8.8.8 and 8.8.4.4 (public DNS provided by Google) in Internet Protocal properties Advanced -> DNS seting.



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hatkindCommented:
Post here your ip settings (ipconfig /all) from dns server and workstation.
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kaskhedikar_tusharCommented:
Hello,

Please check the TCP/IP settings on windows server.

Then check the DNS server's forward & reverse lookup zone.Check with nslookup command.

Please also check the DNS forwarders.

Open DNS server - right click on DNS server - properties - forwarders.


Regards,
Tushar Kaskhedikar    
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