There are several methods to improve your Mac performance. In the beginning, start the Activity Monitor and look the memory utilization issues. Pick the processes that are causing the issue and click to quit. If you want to quit, mac os catalina slow click Quit. the process takes more than the memory available. Alternatively, you can also make use of the System Memory tab to check if there are any other slow processes running in your Mac.
A CPU issue is another factor that could cause slowness for your Mac. If you’re running a program that’s using lots of CPU, then you need to shut it down. In the Activity Monitor, click on the “X” button that is located under the buttons. If you’re not certain the apps that are using up too much CPU power then try doing a Google search on them. It will give you an idea of which applications are causing your Mac to slow down.
In the event that your HDD is overflowing the drive can also trigger your Mac to run slowly. The operating system can run slower when you run more than one program. You can delete files they don’t need or transfer them to a different location. Open Activity Monitor to see a run-time list of processes running in your Mac. A few errors should appear – this is an indication that your Mac has too many running at once.