Windows 7 play online games PING high how to do

often heard that people use Windows 7 to play online games when the network delay is relatively high, that is, ping is higher than usual xp, has been unable to find the reason, very distressed. Today we finally found the reason. It turned out that a service of Win7 is working. This service is called: Multimedia Class Scheduler. This service makes my PING so high. The problem is found. So how do we solve it? Very simple, disable it. Just fine.
Disabled method: Start--Run-regedit, expand [HKEY_LOCAL_MacHINE/SYSTEM/CurrentControlSet/Services/Audiosrv] Double-click to open the DependOnService project on the right, delete the MMCSS (do not delete it), save it.
The settings will not take effect until you restart the computer, then close and disable the Multimedia Class Scheduler in the service, and then enter the game to see if there is any improvement?