Fix Windows 7 Ping Spikes

TrOuTMouTh

For those of you that have a problem after installing windows 7 with your ping spiking all the time try this fix it worked for me and many others.

Leave the multimedia class scheduler service running, but disable its network throttling "feature":

* Open regedit
* Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile
* There will be an entry for network performance throttling, default value is 10; set it to FFFFFFFF hex (willl look like 0xFFFFFFFF to the right of the entry)
* Reboot

Here are some example threads where this fix was useful:
Counter-Strike Series & Windows 7 = Lag?
stuttering in games. (mainly valve)
High Ping and Choke in Windows 7 (CSS/TF2)

Games affected:
Source Engine Games (Team Fortress 2 (TF2), Left 4 Dead, Counter Strike Source (CS:S, CSS))
Heroes of Newerth (HoN)
Call of Duty Series (CoD), possibly including Modern Warfare
Overlord Series (Overlord, Overlord: Raising Hell, Overlord 2)
Crossfire