MacOS Mojave Slow? How To Speed UP?


In this topic, I am going to share with you several solutions to get rid of a slow Mac running macOS Mojave.
MacOS Mojave has been known as the latest operating system recently published by Apple. This version of macOS engages to bring to users diverse wonderful features such as dark mode, desktop stacks, new applications, and a revamped Mac Store, etc. This is also the reason why many people were attracted to make an effort to use macOS Mojave. However, each update of this operating system has the potential to slow down your Mac. If you’re struggling with the same problem, just dive straight into this post to figure out how to boost up the performance of your macOS machine.

How to Speed Up macOS Mojave 10.14

The update of Mojave 10.14 probably is the main factor that results in the slow performance of a Mac. Indeed, there are diverse reasons causing this problem. Have a look at the following tips to make your Mac working as the original state.

1. Clean Up your macOS Mojave

The primary reason that may impacts negatively the performance of your Mac is that the data on your Mac is overload. In this case, it is obvious that you need to clean up those unnecessary data.

Wiping out the junk files manually would be very time-consuming, so I recommend you to use a third-party app to do so. I suggest you use CleanMyMac X because you will be able to get rid of all the junk in every corner of the computer’s hard drive in a short time once you use this amazing software. Hence, check out CleanMyMac X to free the space of your drive and also speed up your Mac.

2. Manage Startup Items To Fix Slow Login

At times, you may find that your Mac takes a long time to boot up. I totally understand how it feels because this problem is pretty annoying and frustrating. In this case, you can easily speed up your macOS startup in just a couple of seconds by pressing the “ power on ” button. In the next step, you can disable the unnecessary apps which may trigger the slow performance on your Mac.

Disable Auto-Run Programs

To stop startup items:

  • Step 1. First off, click on the Apple menu.
  • Step 2. Navigate to “System Preferences”.
  • Step 3. Then, Select “Users & Groups”.
  • Step 4. Next up, choose your username on the right side of the screen. On the left, hit “login items”.
  • Step 5. Now, check the box next to the items you desire to delete. Once you finish the selection, click on the – (minus) button at the bottom.
Disable Hidden Startup Items

  • Step 1. In the first step, head over the “ Speed ” module.
  • Step 2. Next, Go to “ Optimization ” and then “ launch Agents ”. A list of applications running during your Mac boots up will appear.
  • Step 3. Now you can deactivate all these applications or delete them.

3. Use the Activity Monitor to Disable Power Hungry apps

In order to prevent power-consuming apps from slowing down your Mac, you can take advantage of the Activity monitor. To launch it, navigate to “ Applications ” then “ Utilities ”. Double click on “ Activity Monitor ”.

Now, you should look for the applications occupying a large amount of your CPU space by hitting the “ %CPU ” column. Then, you can click on the “X” at the left top corner to stop the app if it is not necessary.

Finally, select “ Quit ” to save all changes then closes the application but this takes a while.

It is possible to immediately close the app by using “ Force Quit ”, however, this will make the unsaved changes lost.

4. Moderate the UI Experience

  • Step 1. To begin, head over “ System Preferences ” then click on “ Accessibility ”.
  • Step 2. Next up, select “ Display ” and check the box corresponding to “ Reduce transparency ” and “ Reduce Motion ”.

5. Update Software

Getting your software up-to-date will make them compatible with the Mojave and have a smoother performance.

To do so, go to “ system preferences ” then “ Software Update ”. If you see the “ Update Now ” button, click on it and your mac will automatically download and install the update.

6. Use the optimize Storage feature

To enable this function, head over the Apple menu and then click on “ About this MacStoragemanage ”. In the pop-up dialog click on “ optimize ”.

By doing this, you have just wiped out the unused files from your mac and arrange the file in your drive.

7. Reset SMC and NVRAM/PRAM

The SMC and PRAM have the potential to trigger a slow performance of your Mac once they are corrupted. In this case, you need to reset them.

Reset SMC on MacBook Air, MacBook Pro or MacBook

  • Step 1. First off, shut down your Mac and unplug the power cable.
  • Step 2. Now, wait for 15 seconds then reconnect the power cable to your Mac.
  • Step 3. Next up, press left shift, option, control, and power buttons simultaneously for about 10 seconds
  • Step 4. Now Release all keys and power the Mac on.

Rest SMC on iMac, Mac Pro, Xserve or Mac Mini

  • Step 1. To begin, shut down your Mac and unplug the power cable.
  • Step 2. Afterward, wait for 15 seconds and reconnect the power cable to your Mac.
  • Step 3. Wait for 5 seconds then turn on your Mac.

8. Upgrade the Mac’s HDD to SSD

An effective way to boost up the speed of macOS Mojave is using a solid state drive (SSD) instead of Hard Disk Drive (HDD). Indeed, you can install the macOS Mojave operating system on your SSD and store other files on your HDD.

9. Maximize on iCloud Storage

As a matter of fact, the more space macOS Mojave occupies, the faster it performs. Hence, if you find that the capacity of your SSD drive to store data is a bit small (128 or 256 GB), it’s time to migrate those which are not regularly used to your iCloud. Once you save your data on iCloud, you don’t have to be afraid because it is safe and you can access your data anywhere and anytime.

10. Disable New Dynamic Desktop

Dynamic Desktop is considerably an awesome feature which modifies the desktop interface based on the day time. However, the drawback of this function is draining battery power and it may cause a slow Mac. Therefore, if you desire to optimize the speed of your Mac, you will need to deactivate this feature.

  • Step 1. To do so, head over the Apple menu.
  • Step 2. Then choose “ System Preferences ”.
  • Step 3. Next up, hit “ Desktop and screensavers ”.
  • Step 4. Now, set your preferred wallpaper.

11. Confirm that your Mac is compatible with macOS Mojave

macOS Mojave may not run properly and the consequence probably a slow performance if your computer is not supported to be compatible with this version of macOS. So, check out the list below to know if your computer is supported for macOS Mojave or not:

  • Mac Pro (late 2013)
  • iMac Pro (2017 or later)
  • iMac ( late 2012 or later)
  • Mac Mini (late 2012 or later)
  • MacBook Pro (Mid 2012 or later)

12. Turn off your Mac regularly

A fact you might not know is that temporary files which have potential to slow down the performance of your Mac will be wiped out once you restart your Mac. At the same time, rebooting your computer will free up RAM. Hence, restart your Mac whenever you don’t use it.

13. Keep Spotlight in check

  • Step 1. To begin, navigate to the Apple menu and choose System Preferences.
  • Step 2. Then hit the Spotlight pane.
  • Step 3. After that, choose the Privacy tab.
  • Step 4. Up next, Drag any folders which are not necessary for Spotlight to index onto the window.
  • Step 5. Finally, quit System Preferences.

14. Close browser tabs

One thing that you also need to keep in mind is that each tab running in your browser will take away Mac’s RAM even though it is super advantageous to keep them open. Therefore, ensure to close the browser tabs when you don’t use them.


There are multiple reasons causing a slow Mac running macOS Mojave. However, understanding the issues of your Mac is crucial to find out reasonable solutions. Now, you already know how to speed up your machine and identify its problems. I hope that these tips are useful and help you get rid of a slow Mac.


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