Having really enjoyed the macOS Sierra on my MacBook Pro, I thought of giving it a try on Mac Pro. Unfortunately, it turned out to be a nightmare. The Mac badly slowed down and just didn’t seem to be running smoothly.

Initially, I couldn’t figure out why the Mac had begun to crawl literally. However, when I took everything into account as well as examined the usual suspects, I could troubleshoot the issue. Frankly speaking, some tips from my pro colleague worked in accelerating the computer as well.

Mac Running Slow After macOS Sierra Upgrade

Has your Mac also slowed down after updating to macOS Sierra? Follow these tips and tricks to fix it.

How to Speed Up Mac Running macOS Sierra

#1. Check Out Activity Monitor

Make sure to check out which apps have used the most memory. To do so, use Activity Monitor to hunt down the culprits.

Step #1. Head over to the Activity Monitor from /Applications/Utilities/.

Click on Applications then Utilities on Mac

Step #2. Click on Activity Monitor.

Click on Activity Monitor in Utilities on Mac

Step #3. Click “CPU” tab. Now, check out which apps are using the high amount of CPU.

Check CPU Usage in macOS Sierra on Mac

If you find any app eating into a lot of CPU, you need to delete it and reinstall it again.

#2. Use Optimized Storage

macOS Sierra has come with a feature called “Optimized Storage” which automatically removes unused files from your Mac and stores them on iCloud. It has been designed to free up storage on your computer. Using Optimized Storage can help you speed up your Mac. You can download those files from the iCloud when needed.

Step #1. Click Apple menu → About This Mac.

Click on About This Mac in macOS Sierra

Step #2. Now, click the Storage tab in the system Information window to have the overview of how much storage you are using on your computer → Click on Manage.

Click on Storage Then Manage in macOS Sierra

Step #3. Click on Optimize in the Optimize storage section of the window. You have to click on Optimize again to confirm.

Optimize Storage in macOS Sierra on Mac

#3. Reset SMC and PRAM 

Reset your System Management Controller (SMC) and Parameter RAM (PRAM) on your computer. Over the time, they might have been corrupted. Resetting them can get the job done.

Reset SMC on MacBook Air, MacBook, MacBook Pro

Step #1. Simply power down the Mac, then you need to unplug the power cable. Now, wait for about 15-20 seconds.

Step #2. Plug the power cord back in. Then, hold down the Left Shift+Option+Control+Power button at once for about 10 seconds. Then, release all the keys.

Reset SMC on iMac, Mac Mini

Step #1. Simply power down the Mac. Then, unplug the power cable and wait for about 15-20 seconds.

Step #2. Now, you have to plug the power cord back in. Then, wait for a few seconds and turn on the Mac.

Reset PRAM on Mac

Step #1. Starting off, you need to power down the Mac.

Step #2. Turn On the computer after a few seconds. Then, press these four keys– Option+Command (⌘)+P+R at one go. The gray boot screen will show up.

Step #3. Keep holding the keys until the Mac has restarted.

#4. Other Handy Tricks

Tone Down the Display

Step #1. Go to Apple MenuSystem Preferences.

Click on System Preferences in macOS Sierra

Step #2. Click on Accessibility.

Click on Accessibility in macOS Sierra on Mac

Step #3. Click on Display → Now, you need to check the box next to Reduce Transparency and Reduce Motion.

Reduce Motion and Transparency in macOS Sierra

Clean Up Messages

It’s better to keep the Messages app tidy. All those high-resolution GIFs, stickers, emojis and images can cause a huge problem. Hence, cleaning up the conversation threads or entire Messages app from time to time can be of great help.

Don’t Let Unnecessary Files Pile Up

It’s very important to keep an eye on the files which are no longer in use. Removing them would be vital for the health of the computer.

Make Sure to Keep Your Mac Junk-Free

There are numbers of third-party tools like MacClean that can let you easily clean up your Mac. It’s worth using them as they will never let the junk files pile up and cause the computer to slow down.

Make the Most of iCloud

Use iCloud to your best advantage. Keep only the files which you require on your computer and store the important ones in iCloud.

That’s it!

I hope these tips are able to resolve the lagging issue on your Mac.

Problems like slow Wi-Fi or apps crashing are not unusual after the update. They can easily be fixed by following some smart tricks.

What has been your overall experience with macOS Sierra? Let us know it in the comments below on Facebook, Twitter, and Google Plus. One more thing, have you tried our iOS app on your iPhone and iPad?