iMac performance is slow after update

Do you have a VPN/Antivirus software installed? If so, remove it to test.

If not, I would recommend posting the free EtreCheck report. It contains no personal information, but there is a wealth of diagnostic information there for what is going on with your computer. Along with the launch processes that are running in the background on your computer, it also has a section that shows which processes are using your Network that may be slowing it down.

How to use the Add Text Feature When Post… - Apple Community

Please download and run Etrecheck.  The free version is sufficient. However, if you find it worthwhile you should support the developer and purchase the app.

Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

Copy the report

and after clicking on the Reply button use the Additional Text button to paste the report in your reply.

Then we can examine the report and see if we can determine the cause of the problem.

Hi there

Please try this

Apple's built-in iCloud Private Relay can sometimes bottleneck internet traffic severely after updates.

• Go to System Settings > click your Apple ID name at the top.
• Select iCloud > Private Relay.
• Turn it Off and test if Safari immediately loads pages faster.

Regarding the up/download speed give this a try:

1 - shut down your Mac, Modem and Router.

2 - turn the units on in this order: Modem, Router and then the Mac.

Then test to see if there's any change in performance.

Upload speed is a function of your ISP.

What is "malware standart"? Needless to say, if you are using any non-Apple "anti-virus", "cleaning", or "Internet security" products including "banking security", anything at all in that broad category of utterly useless garbage, don't. A lot of things won't work if you do. "Turning it off" is generally insufficient. Such things must be completely uninstalled to rid your Mac of their detrimental effects.

EtreCheck is certain to reveal some actionable information.

Please post your full report according to the following:'

Copy the report

and after clicking on the Reply button use the Additional Text button to paste the report in your reply.

Then we can examine the report and see if we can determine the cause of the problem.

hi a bit late but i did etrecheck found no major issues some minor issue that do not need immediate attention.

those minor issues are too long to post i have some here I am not a girl geek on computer so can send few

memory is good / high CPU sometimes when loading is long

apple

irtual Memory Information:

    Physical RAM: 16 GB

    Free RAM: 89 MB

    Used RAM: 8.39 GB

    Cached files: 7.53 GB

 Available RAM: 7.61 GB

    Swap Used: 0 B

Clean up:

    /Library/LaunchAgents/com.teamviewer.teamviewer.plist

        /Applications/TeamViewer.app/Contents/MacOS/TeamViewer

        Executable not found

    /Library/LaunchDaemons/com.teamviewer.teamviewer_service.plist

        /Applications/TeamViewer.app/Contents/Resources/TeamViewer_Service

        Executable not found

    /Library/LaunchAgents/com.teamviewer.teamviewer_desktop.plist

        /Applications/TeamViewer.app/Contents/Resources/TeamViewer_Desktop

        Executable not found

Network:

    Interface en0: Ethernet

Interface en4: Ethernet Adapter (en4)

    Interface en5: Ethernet Adapter (en5)

    Interface en6: USB 10/100/1G/2.5G LAN

Interface bridge0: Thunderbolt Bridge

    Interface en1: Wi-Fi

        802.11 a/b/g/n/ac

 iCloud information is limited without Full Disk Access

 Firewall:

        Blocked apps: None

System Software:

    macOS Golden Gate 27.0.1 (26A434)

 Installed 2026-10-06

Time since boot: About 5 hours

ty for ur patience

its upload speed ty

Post the report according to OldToad's instructions.

    macOS Golden Gate 27.0.1 (26A434)

Update macOS according to Update macOS on Mac - Apple Support.

It looks like you just about had it. After pressing the Additional Text, there are 2 boxes, the Title you correctly added showing etrecheck report, but in the other Text Box where it says add note, error log, etc is where you want to paste the report that was copied using the Copy Report menu item in EtreCheck. It looks like what was added there was imac slow loading pages.

...i did copy and used add text paste

When you use "Copy Report" from Etrecheck's Share menu, do not highlight the report first. Etrecheck knows what to copy without us having to highlight. Otherwise you get a partial or garbled report.

hank ypu you guessed it ! I just about had it lol anyway I got no major issues and some minor that do not need immedate attention

after the big download of 27 on oct 6th that is where it started now I have 27.2 that says 10 days left then 5 days ans stay there for hours so will call customer sce

thank you all for trying hagd

hi I did that several times no changes some upload getting faster specialy if I use them often now downloading 27.2 is a monster 5 days since i was slow before all gets slow but I am not the only one some have 12 days

bottleneck I think I ll weigh it out and wait

Thanks hagd

hey I tried but it seems to be with icloud+ and i don.t have iclous+

i clicked on it anyway but nothing happen/ thank you for helping

Upload speed is a function of your ISP, but you wrote your iMac's performance is slow. Which is it? One or both?

i don t have VPN i have malware standart its about the only one that run in the background I turned it off but no changes

hi and TY

i did copy and used add text paste and send I still have the 5000 extra sorry just did it step by step

sorry that is al,l i can do still 2 much characters but ty for caring

End of report