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Tudno

Increased CPU Usage and Sluggish PC Performance

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For about a week now I've been noticing randomly and at least once a day my Windows 10 PC would start getting sluggish and Malwarebytes cpu usage would spike to over 10%.  While this was happening everything would lag such as opening programs, clicking on the start menu and even trying to open task manager.

I noticed others have been having similar issues recently too so i followed some suggestions of disabling the protections one by one with no difference until I disabled Ransomeware Protection.  Once I disabled it Malwarebytes CPU usage immediately dropped and my PC became responsive again.

I've provided the logs here if a staff member wants to look at them.

mbst-grab-results.zip

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Hi @Tudno,

Thanks for the report.

When this issue occurred each day, was it around the same time of day?
I see you have both Ransomware Protection and Self-Protection disabled. Can you enable Self-Protection please (leaving Ransomware Protection disabled) and verify the issue doesn't return. To enable Self-Protection: Settings -> Protection -> Startup Options -> Enable Self-Protection module.

-----

Would you be willing to temporarily revert to the previous component package and check if the issue still occurs?

If you are, please uninstall your existing Malwarebytes installation and use the installer linked below to install the previous component package version:
https://malwarebytes.box.com/s/942x9q0uphu1jpkqy1i37u3mg74d5cmp

After installation, open Settings -> Turn off the, "Automatically download and install..." setting.
Ensure Ransomware Protection and Self-Protection are both enabled and check if the issue still occurs.

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Hi @LiquidTension

Yeah the issue seemed to occur most days around the same time in the evening about 7pm-ish.  Although one time it seemed to occur in the afternoon after I finished playing a game.  At first I would just reboot my whole PC to alleviate the problem until I started troubleshooting by turning modules off.

I have downloaded the previous component package that you have suggested and I will try running it with the settings you have said to see how it goes and will report back again in a day to let you know if that issue occurs again.

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So far with the previous version everything seems fine.  I have had no performance issues with the Ransomware protection and self-protection modules enabled.

I'm just wondering what I should do now since I have the "Automatically download and install application component updates" setting turned off.  Such as when can I enable it again to get any future component updates that may fix it.

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Update

The issue came back on the 2nd day just there about 10 minutes ago about 18:20 UTC+1.  My PC was lagging so bad that the prompt from UAC to turn off Ransomware protection would not show so I had to reboot my PC.

I have attached more logs from the version with the previous component package and in the meantime I will keep Ransomware protection disabled.7

mbst-grab-results.zip

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