How to Stop the Mac Rainbow Wheel
~For all of the mac users~
What is Rainbow Wheel?
How to get rid of this annoying Rainbow Wheel?
1. Just wait.
2. Check Activity Monitor.
3. Force-quit.
Just Wait
Check Activity Monitor
1. Check the availability of memory.
If you go to tab of system memory, you can check the availability of memory. If the memory is full, it shows that a process called "pacing" is going on in your mac frequently. This is one of the factor that makes your mac slow.
2. Check the availability of CPU
You can check how CPU of your mac is used on activity monitor. By checking this, you can know what application is requiring a lot of processing to CPU and making your computer slow.
Force-quite
Run an Apple Diagnostics or Apple Hardware Test
For other way of solving this, you can run an Apple Diagnostics or Apple Hardware Test to see if anything is wrong with your computer's hardware. Shut down your computer. Turn it on, and before it can boot your desktop, press and hold down the letter D on the keyboard. Your system will run a diagnostic test and inform you of any problems. Depending on what it finds, you can then determine how to fix the problem using Apple's online support or going to the Genius Bar at the Apple Store.
Official Apple Support
Website: https://www.apple.com/support/
Phone: 0800 0201581