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How to Fix Avast High CPU Usage

Avast High CPU Usage: Why does the Avast service use such a high CPU avast high cpu usage #general #cyber-security

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Atul’s Answer

What features set of Avast you are using. It is only AV?
Try installing Norton evaluation software that is available for 30 days to know if you have any virus, malware, or any other malicious software. Remove it and then reinstall Avast to see if it fixes it.
Keep in mind beyond Avast, there is a number of other free AV software available. Check out CNET.com.
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Peter’s Answer

I assumed it is the Avast AV you're using. any AV software try to check the files for malware as well as scan the memory. Is it possible to look at the task manager to see if your activities are . see if you have both high CPU and high disk or just high CPU. furthermore, check you memory, lack of memory will create more task switching which create more CPU work. If you're concerning of malware, then check network activities and see if any unknown activities are happening. Mike suggested the sysinternal tools, I used procexp and tcpview a lot. If everything within normal parameter, follow what others have suggested like re-install .
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Naga Niranjan’s Answer

Hi Lakshitha,

Avast product as such is a resource-intensive scanning software. This is a very generic question and difficult to answer without a diagnosis. To begin with, look into any scheduled scanning and change it to max value available. Alternatively, upgrade the software periodically which may in turn help in reducing the CPU usage.

Good Luck!
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Mike’s Answer

lakshitha

Assuming you are using Windows 10 here is what I would do:

1). Check out Avast user forums and see what they recommend - Here is a four step recommendation - https://www.partitionwizard.com/partitionmagic/avast-service-high-cpu.html
2). Ensure Avast is up to date and then review any software that may need scanning exclusions
3). Remove old unused software and ensure you are up to date all on patches

Other recommendations would be to use advanced tools such as Windows SysInternal tools if you want to find it yourself - https://docs.microsoft.com/en-us/sysinternals/downloads/pstools

Good luck!
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