Two of five user accounts suddenly glacial
I have 6 user accounts on my computer, one admin and 5 standard users.
Account A is for most of my personal activity. I use it for hours a day, every day.
Account B is for selected activity. I use it briefly every day.
Account C is for different selected activity. I rarely use it.
Account D is for Logic Pro only. I also rarely use it.
Account E is for work activity. I use it for hours a day on workdays.
A couple days ago, account B started being glacial. Today I did some experimenting and discovered:
- It doesn't happen in Safe Mode.
- That account doesn't have any login items.
- Enabled background processes shown on the login items panel all seem to be signed and mostly shared with the other users.
- Virtually all apps I've tried (Thunderbird, Firefox, Safari, Chrome, Finder, Activity Monitor) launch and quit extremely slowly, as in up to a minute or two. Relaunching the Finder using Force Quit takes 9 seconds.
- Terminal, however, works just fine.
- On multiple launches, there doesn't seem to be any app or process that is stuck in common between the different launches.
- Logging on in Safe Mode doesn't fix the problem for when I'm not in Safe Mode.
It doesn't happen on my Admin account or on accounts A, C or E. It happened once on account D when I tried it, but when I tried again, Logic Pro was fine.
I am running macOS 13.3.1 (a). I can't say for certain whether the behavior appeared immediately after installation of that version. All of my apps are in the system's Application folder and were installed by user A using the admin account name and password. I install macOS upgrades on account A as well.
The computer has 16GB memory and over 300GB of remaining storage. I have a recent backup.
Any idea how I might go about getting my performance back on account B?