To see if an app is using the higher-performance discrete GPU, open Activity Monitor and click the Energy tab. If you don't see the Requires High Perf GPU column, your computer only has one graphics processor. In this example, iMovie and Final Cut Pro are using the higher-performance discrete GPU. Any app that's built with Apple's 32-bit software libraries will need to be updated so it will run in 64-bit mode. These are primarily older applications, but some newer specialty apps are also still 32-bit. As Apple says, 'The technologies that define today's Mac experience—such as Metal graphics acceleration—work only with 64-bit apps.
Many MacBook Pro models have two graphics systems — an integrated graphics processor and a discrete graphics processor — and a software feature that optimizes graphics performance between them.
On these computers, the 'automatic graphics switching' option is turned on by default to allow your computer to automatically switch to the best graphics system for the applications running on your computer. Download easy scan for mac. Using this option may also maximize battery life.
Mac App Switching Graphics App
When your computer is connected to an external display, high-performance graphics remain on until you disconnect the display.
Mac Graphics App
If you want to use the higher-performance discrete graphics processor at all times, choose Apple menu > System Preferences and click Energy Saver. Then deselect the automatic graphics switching checkbox.
If you don't see the automatic graphics switching option, your computer has one graphics system. To confirm, choose Apple menu > About this Mac, press the System Report button, and select Graphics/Displays on the left. The graphics system or systems are listed under Video Card.
Learn about setting the graphics performance on earlier MacBook Pro models and how to determine which graphics card is in use on a 15' or 17' MacBook Pro.