heavy power usage after last update

in case you're not familiar with Kaspersky settings, here are some screenshots that hopefully can help

Spoiler

 

 

 

 

 

But what if you reinstall your Windows, in the first few days everything work ok and then suddenly the problem returns?

you can try one last thing, install Kaspersky security cloud free, set the scanning level to maximum and scan your entire computer once, see if it detects anything, it's worth the try

https://www.kaspersky.com/free-cloud-antivirus

p.s update it first before doing the scan

1. i have default windows 10 defender  

2. i uninstall every unnecessary apps from system 

3. ya  i watch lots of video in fb 

 i m thinking reinstalling windows 

HotCakeX 

Oh other browsers are having the same problem only with Facebook?

hmm that's interesting.

couple of things come to my mind:

1. your AV program is scanning the secure Facebook connections and for some reason it is causing high CPU usage.

2. something installed in your computer is causing the high CPU usage.

3. maybe depending on what you are doing in Facebook, your high CPU usage is normal. for example if you are playing games or viewing lots of videos, pics etc.

btw which other browsers did you try?

well problem returns and the problem happens with facebook only and i tested with other browser and result is same HotCakeX