Over time, any computer starts to work more slowly. There may be several reasons for this. Mac is not an exception. We'll look at several ways to boost up the computer and. how to fix mac running slow
Remove unnecessary programs from startup
Some programs are loaded automatically during the launch of macOS. They always work in the background, hence they use RAM and load the processor. Because of this, there may not be enough Mac computing power for other tasks.
Call the Apple menu and open the "System Settings" → "Users and Groups" section. Then go to the Input Objects tab. To remove a program, select it and click the minus button.
Check the amount of free disk space
The speed of the Mac depends on the amount of free space available on the disk. If the drive is more than 90% full, the computer may be slow.
Check how much space is left on your disk. Call the Apple menu, click "About this Mac" and go to the "Storage" tab. If less than 10% of the drive capacity is free, clean the disk of unnecessary files. To do this, click on "Manage" and follow the recommendations of the storage optimization system.
Remove unnecessary programs from your computer
Perhaps, among the programs you have installed, there are those that you do not use. They take up disk space and can consume other system resources by slowing down the Mac.
Find and remove any unnecessary programs. Open Finder → "Programs" and look for them in the list that appears. If you find it, drag the labels of such applications to the recycle bin icon.
Clear the system cache
During the macOS use, program garbage accumulates in a special section of memory called a cache. And because of this, your Mac can be running slow. Clear the cache using special programs or manually.
Check the disk for errors
The speed of the Mac may be reduced due to errors in the drive. You can check their availability with the help of "Disk Utility". If problems are discovered, it will try to solve them.
Open Finder → "Programs" → "Utilities" and start the "Disk Utility". In the left pane, select the disk to scan and click "First Aid" and then "Run."
Optimize the work of Spotlight
The Spotlight service indexes partitions of the file system to help you find the files and folders you need. The indexing takes a significant amount of resources, and in some cases, it leads to slow work of the Mac.
To check the relationship between Spotlight's performance and system speed, open the "System Settings" → "Programs" → "Utilities" → "System Monitoring" under the Apple menu. In the table that appears, click on the "% CPU" column, so that the most ravenous processes are at the top.
If you notice that during the process of slowing down the computer processes with the name mdworker are at the top of the list and at the same time the graph displays an increased load at the bottom of the window, try optimizing Spotlight search.
For sure, there are folders on your computer with a lot of nested files, in the search for which you do not need. Exclude these sections from the indexing list. To do this, call the Apple menu and click "System Settings" → Spotlight. Click the "Privacy" tab and drag here the folders that the service does not have to index.
Upgrade to the latest version
The performance degradation may be caused by errors in the macOS system itself or by its poor optimization. Developers try to quickly correct such gaps with the help of updates.
Update your macOS to the latest available version. To check its availability, open the App Store and on click the top toolbar on the button "Updates" (Updates).
Check the RAM consumption
Often serious performance problems are caused by a lack of RAM.
To check its status, open the "System Settings" → "Programs" → "Utilities" → "System Monitoring". Select the "Memory" tab and look below at the "Load on memory" indicator. If you see a red color on it, it means that the system does not have enough RAM.
Restore the system to the previous version
Perhaps the low speed of your computer is the result of errors in macOS, accumulated over a long time of its use. If nothing else helps, try to restore the system to its previous state.