OS X Yosemite: App Nap

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App Nap

App Nap helps you save power when you’re working with multiple apps at the same time. OS X can tell when an app is completely hidden behind other windows, and if that app isn’t currently doing something for you, such as playing music, downloading a file, or checking email. If the app is hidden or not doing something, OS X slows the app down. As soon as you start using the app again, it instantly shifts back to full speed.

Last Modified: Jan 22, 2016
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