Control Your Mac’s Performance With the Activity Monitor
The Activity Monitor is a helpful app on your Mac that can show you how your GPU and CPU are being used. Additionally, you can also use it to see which apps might be causing issues with your Mac’s performance.
The fastest way to access the Activity Monitor is to press Command + spacebar to open the Spotlight Search. Then, type “Activity Monitor” and press return.
Now, you can click on CPU at the top of the window to see a list of all the apps that are running on your Mac. You’ll also see your CPU Load and discover which apps are too demanding for your Mac.