Avast uses a lot of CPU

Avast Free Antivirus / Premium Security
1

First of, i don’t even know im in the right section.

Okay, so randomly about 1-2 times per day (sometimes when i start up my computer) Avast! uses a lot of CPU usage. It can go up to 60-70% and makes my PC unusable for 5 minutes. It’s really annoying, cause i haven’t had it before. Here is a picture: https://gyazo.com/b2c6a4e54c53c09270a51ff07268f209

I have a theory that it maybe updates something, cause my brothers internet starts to lag sometimes.

Sorry if it was hard to understand, im not the best writing texts :stuck_out_tongue:

-Eddie

2

According to AV Comparatives latest performance tests, avast is the lightest AV on the planet:

http://chart.av-comparatives.org/chart1.php?chart=chart4&year=2015&month=5&sort=1

The issue must be in your computer. Please format your computer and ensure to disable Windows Defender completely before installing avast. I use this to uninstall Windows Defender completely along with all its registry remnants. Mind you, this only works on Windows 7 and not 8 or 10 because Windows Defender is heavily integrated into the OS in Windows 8 and 10

Windows Defender Uninstaller for Windows 7 = https://www.raymond.cc/blog/download/did/1984/

How to disable Windows Defender manually in all Windows versions: https://www.raymond.cc/blog/how-to-disable-uninstall-or-remove-windows-defender-in-vista/

3

In Windows 7 you simply need to turn of the service. It doesn’t have to be removed.
In Windows 8 and up, Avast will turn off Defender when you install Avast.

4

Thanks for the answers! I will format my PC in the upcoming weeks. Not feeling like it right now.