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MacOS Performance Help if MacOS is Slow

Find and get Mac OS Help if Mac OS is Slow, or Mac OS is Slow after a Mac OS Upgrade, or a Mac OS Upgrade. Telephone or Apple Text or Email Mac OS Experts.

Where can I get help if Mac OS is Slow and Mac OS Has Slow Performance on my Apple Mac Computer?

Get Help if Mac OS is Slow from Keith Thomas, with our Mac OS Slow Help and if Mac OS is Slow after a Mac OS Update or a Mac OS Upgrade or of you Apple Mac Computer Mac OS has suddenly become slow or very slow.

Our Mac OS Slow Help and Apple Mac Computer Maintenance Service is open and available from 09:30 am to 20:30 pm. for On-Site Mac OS Maintenance in Surrey, Hampshire, Berkshire, Wiltshire, and by Apple Mac Computer Remote Maintenance Support Service in the UK United Kingdom. Complete our simple website contact form to get help if Mac OS is Slow.

Get Mac OS Help if Mac OS is Slow.

  • Mac OS Slow Help.
  • Mac OS Slow Performance Help.
  • Get Help if mac OS is Slow.
  • Mac OS Big Sur Slow Help.
  • Mac OS Monterey Slow Help.
  • Mac OS Ventura Slow Help.
  • Slow Apple Mac Computer Help.
  • Mac OS Sonoma Slow Help.
  • MacOS is slow after Mac OS Update.
  • Mac OS Sonoma is Slow Help.
  • Slow Mac OS Help.
  • Slow Mac OS Support Help.

MacOS Can be Slow After a MacOS Upgrade or MacOS Upgrade.

Many background tasks have to complete to get the best MacOS performance after a Mac OS Upgrade or Mac OS Update.

For Apple Mac computers that have a Macintosh HD know as a SATA hard disk drive, the macOS performance can be slow due to the speed of the Macintosh HD SATA storage volume as the write and read speeds can be slow or very slow, whilst Mac OS completes background tasks.

In most cases simply allow more time for the Apple macOS Upgrade to complete background tasks, allow 1-4 hours, then try the MacOS computer performance again in 24 hours if MacOS Big Sur seems slow, after a MacOS shutdown and restart the computer once more.

Help with macOS Performance after a MacOS Software Update & Mac OS Upgrade.

How to troubleshoot Apple MacOS Slow performance after upgrading to Apple MacOS Big Sur.

Our Apple Mac computer technicians explain why Apple Mac OS might be slow after upgrading a Apple Mac computer has had a MacOS Upgrade or Mac OS Update. Read our free guide on how to fix the problem with Apple MacOS Slow performance on a Apple Mac computer.

If you have just upgraded MacOS and the performance of the Apple Mac computer has become slow or very slow, in most cases the Apple Mac computer needs more time to complete the upgrade. Many tasks will run in the background.

What Happens After you have Upgraded MacOS

The following background tasks will often run or start after upgrading to Apple MacOS Operating System Software.

  • Spotlight – The Spotlight Index is updated in the background.
  • Mac Mail – The Apple Mac Mail application is updating the Apple Mail database.
  • iCloud – The Apple iCloud Drive is setting up and optimising the iCloud Desktop and Documents folder.
  • Photos – The Apple Photos application is uploading original files to the Apple iCloud Photos Library.
  • Photos – The Apple Photos application is optimising the Apple iCloud Photos Library file.
  • MacOS software updates – The app store is downloading Apple MacOS updates and software updates.
  • Apps – Applications that are opened for the first time after a upgrade to MacOS Big Sur need to optimise.
  • Incompatible software – A application that is not fully compatible with Apple MacOS Big Sur is causing the computer to become slow.
  • Time Machine Backup – The performance of a SATA disk can be slow whilst the Time Machine backup process runs.

All of the above tasks need to complete after you have Upgraded MacOS Big.

Simply allow more time for MacOS Perform and complete the tasks. Most of the tasks will complete after a day or two if you have a high amount of data.

Mac OS Big Sur Performance Maintenance Help Guide.

Time needed: 59 minutes.

How to troubleshoot Apple MacOS Big Sur slow performance after upgrading to MacOS Big Sur.

  1. Optimise the Storage volume.

    1. Open the Apple Menu items and select About this Computer Menu.
    Select the Storage tab.
    Click Manage.
    Follow the Recommendations.
    Apple Mac Manage Storage information

  2. Optimise the Memory.

    Open the Users and Groups control panel from the System Preferences menu.
    Click on the Login Items Panel.
    Remove all of the items in the startup items list.
    Quit all of the applications that are open in the Dock apart from the Finder.
    Select the Apple logo and choose Restart…
    Untick the “Re open Windows when logging back in”
    Restart the Apple Mac computer.

  3. Uninstall applications.

    Remove any applications that are no longer used.
    Ask a Apple Mac computer technician for advice and assistance if required.

  4. Manage the Startup Items.

    Optimise the Apple Mac computer by stopping any applications from opening when the Apple Mac computer starts up.
    Examples • Spotify • Microsoft Office for Mac • Adobe software. Third party utilities.

  5. Perform a Apple Mac security check.

    Use a Apple Mac computer software tool to perform a Apple Mac computer virus and Apple Mac security check.
    Consult with a Apple technician on the best tool to use.

  6. Uninstall Adobe Flash and Oracle Java.

    Visit the Adobe Flash Player website and download the Adobe Flash Player removal tool from.
    Visit the website and use the java removal tool.

  7. Remove any 32-bit applications.

    Ask the software vendor for software tools to remove the 32-bit code from your Apple Mac computer running MacOS Big Sur.

  8. USB and external devices.

    Temporary remove any external USB storage volumes and memory sticks from the computer to troubleshoot a slow USB device.

  9. Update to the latest version of MacOS Big Sur.

    Use the Apple Software Update icon to allow the Apple MacOS Big Sur operating system download and install any MacOS updates.

What is the best way to speed up MacOS?

Apple MacOS Big Sur performance FAQ Questions and Answers by Apple Support Specialist – Keith Thomas.

What is the Best Way to Improve the Performance of Mac OS on Intel Apple Mac Computers?

Use SSD solid state flash storage technology as the macOS Start-up Storage volume if you have a Apple iMac Desktop Computer that is using a slower SATA Storage Volume.

Upgrade the memory ram from 8Gb to 16Gb can improve the performance on supported Apple Mac hardware.

The best way to speed up MacOS Big Sur is to upgrade from SATA to SSD on a Apple iMac 2017, or iMac 2019 or MacBook Pro computer that has an older SATA storage volume fitted. A SSD is 66% to 70% faster than a SATA storage volume.

If an SSD internal storage is not possible or is no longer available, the an option that can work is to use an external USB storage volume, like the Crucial X8 or a Western Digital My Passport SSD.

Does the Apple Mac OS Operating System Software Need Regular Apple Mac Computer Maintenance?

Yes. The built in Apple MacOS Maintenance Tools Keep MacOS Running at its best performance.

Its a good idea to leave the Apple Mac computer switched on for 12 to 24 hours so that the built in MacOS maintenance scripts can run.

Further Reading on Apple Mac computer maintenance.

How to get help with a slow Apple Mac computer in the UK?