7 Easy Ways to Speed Up macOS Sonoma

Clare Phang
Last updated: Jan 15, 2024
Summary: Is your Mac running slow after upgrading to macOS Sonoma? Don't worry. Follow the 7 easy ways to speed up macOS Sonoma.

The new macOS Sonoma is finally coming on Sep, 26th, 2023!

Although the upgrading is attractive, there are still some macOS Sonoma issues under resolution. One of the macOS Sonoma issues users care about most is the Mac running slow after updating/upgrading to macOS Sonoma.

To solve this headache issue, this post provides you with 7 easy and effective ways that work well for speeding up macOS Sonoma. Just keep reading!

7 Easy Ways to Speed Up macOS Sonoma

Why Is Mac Running Slow After macOS Sonoma Update

Many reasons may lead to Mac running slow after updating/upgrading to macOS Sonoma. Here is a list of the most common ones collected from the macOS Sonoma users and testers:

  • Resource-hungry processes.
  • Too many background apps.
  • Mac storage full.
  • Too many startup items.
  • macOS Sonoma system bugs.
  • Spotlight indexing.
  • Incompatible apps.
  • Corrupt disk permissions.
  • Too many browser tabs.
  • Unstable network connection.
  • Mac is too old.

How to Speed Up macOS Sonoma

After figuring out the main causes of macOS Sonoma's slow, it's time to learn some easy and practical ways to fix them.

In total, there are 7 methods to speed up your Mac, just dive into each one in detail.

1. Stop Resource-Hungry Process

The resource-hungry process may greatly slow down your macOS Sonoma. Running too many of them may also cause your Mac to crash and overheat.

So don't run too many resource-hungry processes simultaneously. An easy way to find and stop the resource-hungry process is to use Activity Monitor.

Here is how to find and stop the resource-hungry process using Activity Monitor:

  1. Open Activity Monitor using Spotlight or Launchpod.
  2. Check the items under CPU and Memory to find the abnormal ones.
  3. Click the abnormal process and then the quit button.
Stop Resource Hungry Processes with Acitivty Monitor

2. Free Up Space on Mac

Not enough space on a Mac is also one of the top causes of a slow Mac. The macOS Sonoma update itself takes some space.

After upgrading/updating, there may be not enough space for your Mac to run other programs smoothly.

Manual cleaning may be time-consuming and effort-costing. Moreover, not thorough. Here we handpicked a professional and easy-to-use Mac cleaning tool-BuhoCleaner for you. With it, freeing up space on a Mac can be done with a few clicks in minutes.

It offers you various helpful cleaning features. For example, flash clean, app uninstall, duplicate clean, etc. Use it to free up space for your Mac and run your Mac like a new one!

DownloadFor macOS 10.10 and above
100,000+ Satisfied Users Worldwide
To check your Mac storage: Apple MenuSystem SettingsGeneralStorage.

3. Disable Startup Items

Startup items will automatically launch every time you boot your Mac. However, many of them are useless.

Maybe you don't know how many startup items you have enabled. Now follow the guide below to check your startup items and disable unnecessary ones.

Both System Settings and BuhoCleaner can help you identify and remove startup items. And you can catch the detailed steps below:

  • Disable startup items via System Settings:

Click Apple MenuSystem SettingsGeneralLogin Items>disable unnecessary startup items.

Disable Login Items
  • Disable startup items via BuhoCleaner:
  1. Free download, install, and launch BuhoCleaner.
  2. Click Startup ItemsScan>disable unnecessary startup items.
Disable Login Items Using BuhoCleaner

4. Close Browser Tabs and Extensions

Opening too many browser tabs at the same time may slow down your Mac especially when you load too many pages with large videos and pictures.

So close unnecessary browser tabs after you finish reading the page. It works for Safari, Google, Firefox, etc.

In addition, deleting browser extensions regularly also does great help to speed up your Mac (macOS Sonoma).

  • For Google:

Click the three dots on the top right>ExtensionsManage Extensions>Remove unused extensions.

  • For Safari:

Open SafariSafari MenuSettingsExtensions>uninstall unused extensions.

Uninstall Unused Extensions in Safari

5. Uninstall Incompatible Apps

After upgrading to macOS Sonoma, there may be apps incompatible with the new macOS system. So it is recommended that you update your apps first.

If some apps do not have an update and are incompatible with macOS Sonoma, you'd better find alternatives or uninstall them.

Incompatibility issues will slow down your Mac process. Even worse, it may cause an app crash and a Mac crash.

Uninstalling incompatible apps manually or uninstalling them through BuhoCleaner. BuhoCleaner helps you uninstall incompatible apps thoroughly and quickly.

6. Update macOS

Some users are using macOS Sonoma Beta or the early version of macOS Sonoma. Both system bugs and Mac's performance will influence the speed of your Mac.

Always keep an eye on the latest macOS Sonoma version and update it as soon as it is released.

7. Spotlight Indexing

After upgrading your macOS to macOS Sonoma and booting your Mac for the first time, Spotlight needs to rebuild the index. And this may make your Mac seem to run slow. In this case, just wait for the Spotlight to complete its work.

Spotlight is Indexing

Related Article: How to Rebuild Spotlight Index

Besides the above 7 methods, you can also try other methods. For example, repair your disk permissions, reduce the visual effect, tidy up your desktop, restart your Mac, check your network connection, reset SMC & PRAM, downgrade macOS Sonoma Beta/macOS Sonoma to macOS Ventura, etc.


This post gives a full list of what you can do to speed up macOS Sonoma after upgrading/updating.

Hope these methods work and make your Mac running like a new one!

Clare Phang has been captivated by the world of Apple products since the launch of the iconic iPhone in 2007. With a wealth of experience, Clare is your go-to source for iPhone, iPad, Mac, and all things Apple.