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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: tdude51 on January 29, 2010, 01:07:01 AM

Title: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: tdude51 on January 29, 2010, 01:07:01 AM

I am having the exact same problem as the user in this thread:
http://forum.avast.com/index.php?topic=53548.0

When I have the behavior shield on in Avast and download anything (whether it be a webpage in my browser or a large file) my computer will start to lag. Any streaming video will noticeably skip and lag. My mouse cursor will skip across the screen. Upon opening process explorer I find that about a third of my CPU is being used for "Deferred Procedure Calls". If I turn off the behavior shield or the download finishes my computer stops lagging and returns to normal.

I am using Windows 7 Ultimate 32 bit Edition. Once again, this only happens when my computer is downloading something (including web pages, pictures, anything that downloads onto the computer) and when the behavior shield is on.

Title: Re: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: PhilR on January 29, 2010, 01:41:09 AM

Try the new 5.0.396 build and see if that fixes the problem.

Title: Re: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: davepmer on February 01, 2010, 06:36:48 AM

Nope, I am running 5.0.396 and problem continues.

Title: Re: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: Fract504 on February 02, 2010, 09:56:57 PM

Ups.. I am not alone. See my post here:
http://forum.avast.com/index.php?topic=54037.msg464900#msg464900

I wonder if this problem also existed in the betas and no one noticed?
Next time I should opt to test the betas earlier...  :)

Title: Re: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: Vlk on February 04, 2010, 07:19:47 AM

Provided you have the latest VPS, after a reboot, the problem should go away.
Can you please confirm?


Thanks
Vlk

Title: Re: Avast Free 5.0.377 High DPC lag when using Behavior Shield
Post by: Fract504 on February 04, 2010, 08:00:42 PM

The problem has been fixed as far as I can see it.
The DPC Latency Checker Tool is very helpful and was in the green all the time during a download.