Computer too slow due to kernel panic. What should I do?

Hey there!

To start, please create an EtreCheck report. EtreCheck is a simple, helpful utility to diagnose and identify both software and select hardware issues with your Mac.

Downloading

To get started, download EtreCheck:

https://etrecheck.com/en/welcome.html

Click “download” on the site. The app will be downloaded to your Mac to your downloads location, which is the “Downloads” folder by default. This can be accessed by going to the Finder > Go (in the top menu bar) > Downloads.

Open the app, and generate a report

Open the downloaded application, and follow the initial steps to open the app. Choose a problem in the drop-down menu, and click Start. Creating a report typically takes 2-4 minutes on a healthy Mac.

View your report, and upload a copy to Apple Support Community

Once you have your report generated, you can upload it to Apple Support Community for us to review and provide suggestions. Please refer to this document with instructions for uploading your report and using the “Additional Text” function of Apple Support Community:

How to use the Add Text Feature When Posting Large Amounts of Text, i.e. an Etrecheck Report - Apple Community

If you need help in the meantime, please let us know!

-Jack

Thanks for the report!

Antivirus One, VirusScannerPlus, CleanerOne, and DrCleanerProPlus

I recommend you remove these utilities. Mac computers don't benefit from any additional cleaning or anti-virus software, and having them installed often contributes to poor performance and can even damage macOS.

disk3 - Apple Disk Image 1.90 TB ()

What are you using this disk image for? It appears to be very large and EtreCheck flagged it as a potential performance issue.

Check Disk Health

Your Fusion Drive performance scores are relatively low. This could be the result of the third-party software, but I suggest you check the physical health with DriveDx.

-Jack

Nothing stands out with either drive.

If you are still getting Kernel Panics even after fully uninstalling those apps mentioned by @Jack-19, then I recommend running Disk Utility First Aid on the Fusion Drive item. Even if First Aid says everything is "Ok", click "Show Details" and scroll back through the report to see if any unfixed errors are listed. If there are, then run First Aid again to see if those errors get fixed, otherwise you will need to run First Aid while booted into Recovery Mode. If the errors still cannot be repaired even while booted into Recovery mode, then you will need to erase the whole Fusion Drive as GUID partition and APFS (top option)....personally I would break the Fusion Drive & recreate the Fusion Drive at that point.

More than likely the issues shown in the EtreCheck report regarding the drive was caused by those apps, but I can also see a file system issue causing a problem as well. If you continue to have Kernel Panics, then run EtreCheck again and post the new report here so we can be sure those apps have been completely removed and to see what the new errors may be along with a fresh analysis of the drive performance.

You also need to post the DriveDx report for the hard drive portion of the Fusion Drive as well. You only provided the health report for the SSD portion on the Fusion Drive. The SSD portion looks Ok. It is the hard drive portion that is usually the most critical.

Thanks for the info! For us to help, please upload the entire report.

Here are the steps: How to use the Add Text Feature When Post… - Apple Community.

-Jack