Poor Performance: AvastSvc runs 51% cpu usage

I recently contacted tech support for help and they said to run Avast boot-time scan, Malwarebyte and Adwcleaner.

On the first boot AvastSvc used 1 to 2% cpu usage. Running a browser or outlook Express set AvastSvc running at 51% or more. Total cpu usage was 100%. After 5 or 10 minutes usage dropped back into the 2% pange. Very soon however, AvastSvc went to 51% and stayed there for the rest of the time I have been using the computer.

Also I get a popup screen from www.2015-isp-survey.com occasionly. It asks about my experience on the optonline web site. It is malware.

What else should I try?

Nicholas Geti

http://trafficlight.bitdefender.com/info?url=2015-isp-survey.com
http://urlquery.net/report.php?id=1436570676573

Go here: https://forum.avast.com/index.php?topic=53253.0

Attach all of the first three program logs in your next reply. Additional programs may be requested after your malware expert examines the (four) logs produced from the link above.

I have been searching the Internet and found hundreds of hits on this problem. Many people are reporting that the latest release of Avast does not work well with Firefox. Whenever I start Firefox, AvastSvc.exe goes to 50% CPU usage and more and will stay there for a long time.

I have been using the search term, “AvastSvc.exe high cpu usage”

I installed the latest version of Avast (103.2223) and so far the CPU usage does come back down to 1 or 2% after a few minutes after starting Firefox. I will report back if the problem returns.

Google chrome does not affect Avast cpu usage.

I spoke too soon. Right after sending my message I ran Outlook Express. As soon as I clicked the Send/Receive button AvastSvc.exe usage went to 51% and stayed there. Unloading OE did not change the cpu usage.
Nicholas Geti

I’ve notified a malware removal expert to help you. Please be patient.

Hi first we will clean install Avast and then check the computer out

Download Avast Uninstall Utility to your Desktop.
Download the correct version of Avast
Avast Free
Avast Pro
Avast Internet Security
Avast Premier
Disconnect from the net
Uninstall Avast via control panel

[]Run the uninstall tool and accept the reboot to safe mode
[
]Once complete reboot your system
[*]Reinstall Avast


THEN

Please download Farbar Recovery Scan Tool and save it to your Desktop.

Note: You need to run the version compatible with your system. If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

[*]Right click to run as administrator (XP users click run after receipt of Windows Security Warning - Open File). When the tool opens click Yes to disclaimer.
[*]Select additions at the bottom
[*]Press Scan button.

https://dl.dropboxusercontent.com/u/73555776/frst.JPG

[*]It will produce a log called FRST.txt in the same directory the tool is run from.
[*]Please attach both logs generated.

Going through these steps I am stuck on installing Avast. It is near the end trying to install aswNdis. I have waited for an hour or so and it still isn’t finished. Also Firefox cannot find any web sites, “Server not found.” Looks like Avast installation has choked trying to access the Internet.

I am using another computer to send this message. What do I do now?
Nick Geti

That does not sound right

Could you stop the install and reboot, then let me know what the problems are

I tracked down the netsession routine. It is by Akamai to improve downloading apps from the Internet. It tells Windows firewall to not interfere with downloads.

I can uninstall it.

Nicholas Geti

hey i suggest you follow essexboy second instruction and attah the logs from frst+addtion its giving him something to loook at :slight_smile:

Uninstall it please