iMac suddenly running very slow on main user login.

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iMac suddenly running very slow on main user login.

My iMac (27", mid 2010) suddenly started running very slow on the main user (administrator) login. Other user logins including 2nd administrator run normal. I downloaded and purchased the EtreCheck app form the Apple App Store. It appears that the major problem is a runaway process. Without explaining more, here is the report. How to I solve this problem. Typing this message is even very time consuming as I have to wait for the processor to return back to me from crashing and trying to do a report.

Thanks for your help.

Papa Tom

EtreCheck Report

iMac 27″, macOS 10.13

Posted on Jun 14, 2020 12:36 AM

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Answer 1

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padams35

Level 4

3,445 points

Jun 14, 2020 4:56 AM in response to Papa Tom

Maybe the problem is obvious. Open Activity Monitor and check CPU/Energy use. Does the top item(s) on those lists use significantly more than items immediately below them?

If the problem isn't that obvious I'd guess either a login item or a user launch agent for a persistent issue that only slows down a single user. Try restarting in safe mode. Does the main account then run slower or faster? https://support.apple.com/en-us/HT201262

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Answer 2

BDAqua

Level 10

245,159 points

Jun 14, 2020 8:06 AM in response to Papa Tom

Runaway user process - A user process is using a large percentage of your CPU.

Open Activity Monitor in Utilities, sort on CPU%, see if anything using too much CPU%.

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iMac suddenly running very slow on main user login.

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