How Do I Pause An App Or Process In OS X?
Yes, if your computer is feeling bogged down by an app or process you can pause and later resume it. Start by launching the Activity Monitor app (it's located inside Applications > Utilities). Find the app you want to pause and then look for the PID column. Take note of that value and then launch the Terminal app (also located in Applications > Utilities). Type kill -STOP PID where you replace PID with the value found in Activity Monitor. Then hit enter. To resume the app simply type kill -CONT PID, again replacing the PID with the value found in Activity Monitor.