Will factory reset make a MacBook faster?
So many users ask, 'Will factory resetting a MacBook make it faster?'
It's a reasonable question, and the answer depends on what is actually slowing the Mac down.
Answered: will a factory reset make my Mac faster?
Generally speaking, any computer will start to slow down if you allow an excess and build-up of useless system clutter and junk, like broken files, system logs, cache, language files and temporary folders.
A slow Mac often prompts the question, will a factory reset make my Mac faster? The short answer is yes, but it's not always necessary.
Instead of erasing the entire contents of your device, why not try these simple tricks to speed it up?
Factory reset alternative
Although a factory reset might feel tempting, preparing your Mac, saving important files, and protecting the media you don't want to lose is time-consuming. Instead, try these two simple tasks first.
1. Remove system junk
Regularly removing system junk frees up space and can clear the glitches that build-up causes.
If you use a dedicated Mac cleaner tool like the Apple notarized app CleanMyMac, you can get this done in a matter of clicks. Here's how:
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Open the app. Select Cleanup > Scan.
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Wait for a moment and then click Clean.
2. Run maintenance tasks
Maintenance tasks help tidy up temporary files and system logs and prevent unnecessary data overload. You can use the application I mentioned in the tip above to run these automatically for you. Here's how:
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Open the app on your Mac, then select Performance from the sidebar.
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Click Scan > Run Tasks.
If you want to select tasks to perform, click View All Tasks, choose maintenance routines there, and click Run. 
You can also use this tool to manage background processes and login items — these are also known resource hoggers that can slow down your Mac.