You may try to disable auto-tuning. This link may help,
Vista Slow Issues
We can disable them to resolve this issue. For your reference, I have
listed the steps and links here: Disable Auto-tuning/RSS on Windows Vista:
....
http://bobmsmvp.googlepages.com/vistaslowissues
--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Gk_azule" <Gk_azule@discussions.microsoft.com> wrote in message
news:AB08509B-668B-4DAD-9001-1975D06B1496@microsoft.com...
>I recently built a new computer, and installed Vista Ultimate. Now, when I
> try to surf the web, the pages load really slowly, and when I go to
> Speedtest.net, my upload and download rates are decent, but the ping times
> out at 999ms!
> I also notice when I play online games, when the computer first connects
> to
> the server, there is a huge lag, but withing about 15 seconds it smooths
> out
> and I can play the game. Does anyone have any suggestions as to why this
> is
> happening and/or what I can do to fix it?
> BTW, I have updated all my drivers, so I'm reasonably certain that's not
> the
> problem.