Task Manager has always been my first reflex when something feels off. If my PC slows down, I press Ctrl + Shift + Esc, glance at the Memory column, and see that the RAM usage sits at 80 or 90 percent ...
You can check your CPU usage on a PC with the Task Manager or Resource Monitor apps. On a Mac, you can check your CPU usage using the Activity Monitor app. Your CPU usage tracks how hard your computer ...