The 2020 iMac 3,6 GHz 10-Core Intel Core i9 with 72 Gb of RAM is acting up and it is getting worse. I restarted, reset PRAM, did a disk utility repair of the 2 TB SSD drive with about 800Gb available. Especially Mail where it all started is slow and often not responding but not always. What I am overlooking potentially as cause ?
iMac 27″, macOS 15.6
+2 on posting an EtreCheck report of your system.
By the way if you have any of the following types of third party apps installed, almost a guarantee that is the basis of your issue. If you do have any installed, simply uninstall per the developers instructions, then restart the computer in Safe Mode and then restart normally and test. Some of these apps are so poorly written and so intrusive that even when uninstalled per the developers instructions they don't fully uninstall so verify they are gone by looking in a new EtreCheck report!!
+2 on posting an EtreCheck report of your system.
By the way if you have any of the following types of third party apps installed, almost a guarantee that is the basis of your issue. If you do have any installed, simply uninstall per the developers instructions, then restart the computer in Safe Mode and then restart normally and test. Some of these apps are so poorly written and so intrusive that even when uninstalled per the developers instructions they don't fully uninstall so verify they are gone by looking in a new EtreCheck report!!
Install EtreCheck and post the report. Allow Full Disk Access.
Use the Additional Text icon to paste in the report.
How to use the Add Text Feature When Post… - Apple Community
Something may reveal itself in the report.
A big +1 on EtreCheck. One section tests and shows metrics on your storage, the #1 cause of slow iMacs reports here. Normally factory SSDs are never slow but there are a few things can trip them up. EtreCheck is the best single tool we have for finding issues in computers we can neither see nor remotely access in this user-to-user setting.
Please post the entire report. What seems insignificant to a new EtreCheck user can speak volumes to those of us who have reviewed thousands of its reports. EtreCheck scrubs any personal info if you follow the posting steps in the "How to Use..." article.
My 3,6 GHz 10-Core Intel Core i9 iMac has all of a sudden become very slow
