Why can't I change the "Emulated Performance: Graphics" setting in the Android Virtual Device configuration?

Question

I'm trying to set up Flutter using Android Studio, and I'm setting up a Virtual Device using the Android Virtual Device window under Tools. It specifies in these instructions to change the Emulated Performance: Graphics setting to Hardware - GLES 2.0, but the window won't let me change the setting from Automatic. Can anyone explain how I can change this setting? Thanks!

Screenshot:

Solution

Google play images that run on a device like pixel or nexus 5(x), can only accept automatic graphic acceleration. so if you don't need Google play features then you can select another images