Home → CLC FAQ - Basics: Installation, data, system resources → Starting up and running the Workbench → Why is the Workbench sometimes slow on OS X Mavericks and later versions?
4.5. Why is the Workbench sometimes slow on OS X Mavericks and later versions?
A new feature introduced in OS X Mavericks, App Nap, can dynamically reduce the processing power available to individual applications.
This can result in slow processing of tasks by the CLC Workbench if the machine switches to screen saver or is otherwise left running unattended.
App Nap can be disabled per application.
To do so, please right-click the CLC Workbench app and select "Get Info".
Next, check the box labelled "Prevent App Nap".
The Workbench must be restarted for the change to take effect.
A screenshot below shows the above steps on how to disable the App Nap feature.