Has your Mac suddenly slowed down? Were you working on it in a just fine manner before it started to throw its beach ball at you? Colorful as it might be, nobody wants to see the beach ball on their Mac. It just means that something is wrong with your Mac’s performance and that it needs fixing.
Now, please understand that there are a thousand things that could be slowing down your Mac. For starters, it could be that your OS or Mac OS as it is known nowadays is corrupted. If that is the case, you can make your Mac run faster by reinstalling your Mac’s OS or by installing a new update that is available. For example, if you are using Sierra, they just released a combo update about 3 to 5 days ago. What this update usually does is fix underlying bugs that can hamper and are probably hampering your Mac’s performance right now.
Installing such a Mac OS update will usually take out about half an hour to download, install and then restart, but it is one of the most sure shot ways to bring your Mac back to normal.
Another major issue that can slow down your Mac suddenly is when the partition on which Mac OS is installed runs out of free disk space. Apple recommends that you keep at least 20% of your Mac OS partition space free, after installing an OS like Mac OS Sierra. But, tech experts on the Internet believe that there are several benefits to keeping even 50% of your OS partition free, so your Mac’s CPU can all the abundant free space as memory, never really putting any stress on your Mac’s RAM.
So, as a second remedy, try freeing up space on your OS partition. iCloud allows you to do that very well as you can copy many of your files and folders onto iCloud. These two important fixes would have hopefully helped you find a solution to the question why is my mac so slow all of a sudden.