OS 10.15.7 Update - Speed Impact on iMacs

I think we can figure it out if you can submit an etrecheck report...

EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info.

https://www.etrecheck.com/

Pastebin is a good place to paste the whole report if you capture the URL while there…

https://pastebin.com/

Whew, they've changed pastebin & made it harder, but after pasting in, click Create new paste button, then Embed button, then copy the URL...

<script src="https://pastebin.com/embed_js/KuvnghqA"></script>

The important part is...

https://pastebin.com/embed_js/KuvnghqA

Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

My 2013 iMac is faster than ever on 10.15.7. You need to troubleshoot your problem. If you are not skilled enough to do so then hire someone who is.

Apple is not here. This is a users forum. As far as any speed impact, I have two iMacs still running Catalina 10.15.7 and have not noticed any speed difference at all.