Improve macOS Catalina Performance and Feel Good About It

SummaryThis blog is intended to help you run your macOS Catalina optimally and improve its performance without losing valuable data. If you have lost data, read the blog till the end, as we’ll also share a professional tool for recovering data from macOS. Also, get this free SpeedUp Mac app to clean up and optimize your computer.


As Apple Inc. releases a new macOS, droves of people rush to get the new OS with the promise of better performance, advanced security, and increased functionality. But, a few users feel that the new macOS Catalina performance is short on its promise as the system slows down immediately after the update. Some find that their Mac freezes for about 10 seconds every few hours.

Most Mac systems function seamlessly on the new macOS. Still, many users face difficulty mainly because their system is not fully compatible to support the high functionality in the new OS. Several issues have been linked with the latest macOS since its release, like sluggish performance, data loss in some instances, slow file transfer, external drive not mounting, and likewise. We have listed some tips you can practice to resolve the issue with macOS and optimize its performance.

Clean Up macOS Storage Disk

A full storage disk in the Mac can cause many problems like non-optimal performance, logical damage, and data loss. Therefore, frequent decongestion is advised to keep the hard drive healthy and the OS functional.

You can decongest the macOS drive using the two methods – manual or automatic. The manual process is time-consuming as you have to identify every junk file that needs to be deleted from your Mac. In contrast, the automatic process requires you to launch a Mac clean-up software that identifies unneeded files and helps you remove them with a click of a button.

Use Optimize Storage

You can use Optimize Storage feature to improve the performance of your system as it automatically organizes files in an ideal manner. Follow the path shared next to access the Optimized Storage on your Mac easily. Go to Apple menu > About this Mac > Storage > Optimize Storage. After you toggle on the Optimize Storage option, it sends an instruction to the operating system to automatically optimize the storage drive.

Read More: Free Methods to Fix ‘Startup Disk Full’ Issue on Mac

Free-up Memory and CPU Space

One of the primary reasons that cause Macs to slow down after the macOS Catalina upgrade is the large number of applications running alongside require excessive memory consumption, thus, slowing down the operating system. While some applications are necessary, others run in the background consuming valuable CPU space.

To resolve this issue with your Mac, deploy Activity Monitor. Follow the path shared next to access and set up the Activity Monitor easily. Go to Applications > Utilities > Activity Monitor. Below the CPU tab, view the processor usage by various running applications. If you encounter a program with high memory consumption and no usage, stop that program.


The System Management Controller (SMC) and Parameter RAM (PRAM) are essential tools that ensure your Mac runs optimally. SMC is responsible for most of the hardware functions like fans, battery, etc. Reconfiguring the SMC can resolve issues with your hardware, such as battery fault, fault with the fan, and other issues. On the other hand, reconfiguring the PRAM will resolve problems related to screen resolution, booting, battery charging, etc. Follow the steps shared next to reconfigure your SMC and PRAM:

Reset SMC

  1. Shut down the Mac.
  2. Press the power button and hold down the Shift + Control + Option keys.
  3. Release all the keys to boot your Mac.


  1. Shut down the Mac, turn it on, and immediately press & hold Command (⌘), Option, P, and R.
  2. In an older Mac, hold down keys until you hear a start-up sound. Or else press and hold down the keys for 20 seconds. Release the keys.
  3. Open System Preference to ensure everything is appropriately reset.

Read MoreTop 10 Mac Problems with Solutions

Reclaim Disk Spaces with SpeedUp Mac

When your Mac start-up disk is low in free space, your Mac starts to freeze, applications load slowly, and you come across frequent Mac crashes. Perform the following to reclaim disk space:

a) Install *SpeedUp Mac software on your Mac mini, iMac, or MacBook. 

Speedup Mac Download

b) Give full disk access permission to the tool when using macOS Mojave or later. Read how.

c) Launch the software to find multiple optimization features.

Speedup Mac

d) Click the Speed Up tab, select Macintosh HD from the side pane, and click Scan to scan the disk.

Scan Disk

e) Select a category from the left, verify the selected files, and click CleanUp Now.

Click on ClearnUp Now

f) Wait till the software reclaims disk space on the startup disk.

*SpeedUp Mac software is entirely free for 30 days. To continue using the software for one year, activate it with a nominal yearly subscription plan.

That’s it; you’ve successfully freed up your Mac with a click of a button. In case your Mac behaves erratically due to malware, perform the following troubleshooting method.

Restore macOS If Malware Found on Mac

Malware can result in your macOS Catalina slowing down and make your Mac behave abnormally. To remove the stubborn malware from your system, perform the following:

a) Shut down your Mac. Power it on, then immediately press and hold the Command + R hotkey. Release when the Apple logo appears.

b) From the macOS Utilities window, click Disk Utility, then click Continue.

c) Select Macintosh HD from the sidebar, then click the Erase tab from the top.

d) Specify the Name, Format, and Scheme, then click Erase and then click Done.

e) Once the drive is formatted, quit Disk Utility.

f) From macOS Utilities, select Reinstall macOS, then click Continue.

g) Perform the onscreen instructions to reinstall macOS.

You’ve successfully reinstalled macOS and freed your Mac from harmful computer viruses.

Replace HDD with SSD

The latest macOS might also struggle to provide its complete performance due to the hard disk drive. You can try to remove the HDD and replace it with SSD to boost your Mac performance.  

Data Recovery after macOS Upgrade

Data loss can happen if you have updated to the latest version of macOS. After the macOS upgrade, the primary reasons for data loss are accidental deletion, formatting, partitions loss, etc. Error while mounting the external drive can be attributed to a damaged file system, sudden power outage, virus infection, unsafe ejection, and more.

If you have experienced data loss in macOS because of the reasons mentioned above, you can use Stellar Data Recovery Professional for Mac. It is comprehensive software for all your macOS data recovery needs. Using this application, you can restore lost or deleted photos, videos, docs, emails, and more from all data loss scenarios.


With the release of the latest macOS, many users found themselves disappointed as the new OS didn’t fare on its promise of high performance. And if you are one of those individuals with a sluggish Mac, don’t worry, as we have provided solutions for your problem in this article to improve macOS Catalina performance.

You could also lose data if the new OS has caused some file systems or other errors. So, we recommend using professional data recovery software for Mac for all your data recovery needs. The software is adept at recovering lost or deleted files on macOS Big Sur, Catalina, and Mojave from several instances of data loss.

  1. Jon Henderson July 18, 2018
    • Vishal July 18, 2018
  2. Lillian Pena June 18, 2018
    • Vishal June 19, 2018
  3. Ronald Stewart June 4, 2018
    • Vishal June 6, 2018

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