In addition to Thunder look MMCSS will also let Windows 7 card

Use Thunder to watch movies online, or users who use Thunder know that when you use MSN and other software video chat, the transmitted video will be very "card", the sound delay is more powerful. This is actually caused by Thunder (look at) grabbing network bandwidth.

Problem Windows 7 When watching online streaming media, the system has some "cards". This article is not all "cards", it is a Thunder. Knowledge points are "uncommon" situations in which Windows 7 system performance is degraded.

When I was in a video chat, I also listened to songs online. Although I didn’t open Thunder, I didn’t use Thunder download, but Windows 7 still had a “slight card”. Happening. When I used the exclusion method to exclude all networked programs one by one, I found that it seems that listening to songs online makes Windows 7 pause.

Subsequently, the author asked some Windows 7 users, in all the feedback information, I chose to use the following solution:

Run the registry, and then expand the branch to HKEY_LOCAL_MacHINE\\SYSTEM\\ CurrentControlSet
\\Services\\AudiOSrv, find and double-click "DependOnService" in the right window, and then delete "MMCSS" in the pop-up window (as shown below).

Delete MMCSS

After the modification is completed, the Windows 7 card disappears after all the programs that were running before are opened again. Although the "card phenomenon disappeared", but I can not fully affirm that the above method is the "only solution", (because Windows 7 performance is degraded, the cause of the system card is not unique) can only be seen as the solution "maybe It’s right.”

Small knowledge: Why does the Multimedia Class Program (MMCSS) reduce the performance of Windows 7 systems?

The MMCSS service runs in the service host Svchost.exe, which can automatically raise the priority of audio and video playback to prevent other software from taking up too much CPU time for playing software. Whether it is online play or local play, multimedia playback requires a steady stream of media streams. When the playback requirements are not met, the system will "card".

Editor's Comments:

Please note that the method described in this article is actually within the scope of “discussion possibility”, not “must be so”. So, when you encounter a similar situation, please refer to the solution in this article. If the issue is not resolved, please restore the system default settings.