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Windows 7: Random CPU spikes and performance lag

16 Jul 2012   #11

Windows 7 Ultimate x64

Hi, know this topic has not been active in a few months, but I thought I would add some extra notes for people who stumble across it just like I did while researching the same symptoms on my computer.

If you have McAfee Anti-virus then continue reading... hopefully this solves your problems as much as it did mine. I was monitoring my system resources and doing all sorts of things to create the freeze/spike and noticed McSvHost.exe hogging up the entire CPU whenever this spikes occurred. This obviously lead to a more specific search on google that revealed several people having this issue. Try the simple steps below from a different worked for me :)

To disable Net Guard:
1) Open McAfee Security Center
2) Click on "Web and Email Protection"
3) Click on "Firewall"
4) Click "Net Guard"
5) Uncheck the box beside "Turn on Net Guard"

My System SpecsSystem Spec
27 May 2013   #12

Windows 7 Ultimate x64

If you have two monitors, check that the refresh rates are the same. I saw a similar issue elsewhere where they said that fixed one guy's issue. I have the same issue unfortunately that you do, but I noticed that my lag shows up only when the background changes. I like having my background cycle, but if this is going to cause my programs (both games and my browser) to lag/freeze up then I may just shut off the desktop background auto changer thing and pick one picture...
My System SpecsSystem Spec

 Random CPU spikes and performance lag

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