Latency problem with Router

No matter what I do I can not get this (http://www.vistax64.com/tutorials/72308-auto-tuning-tcp-ip-receive-level.html) to stay working I've tried everything I can think of in every setting and I know it's not my router cause it only does this with vista. It will stay at a normal latency for less than 10 minutes before it goes back to its default and makes anything with a ping go over 1000 which makes in impossible to talk or play any games online. Any advice?

Use CAT 6 cables. Save configuration of your router. Reset it to default and reload the config file. Get the latest driver for your NIC. Have your ISP check your modem and connection for issues.

Also, depending on which games you are playing, this may be a problem with Punkbuster software. I've seen (and experienced) a 999 ping, and it is all from a bad PunkBuster install. So if the games you are referring to use PunkBuster, that may be the culprit. Only fix: Uninstall, remove PnkBstrA and PnkBstrB from memory via Task manager, and reinstall.