If you have used Google Camera before, you have probably noticed the lag when rotating your device. When auto-rotation is enabled on your phone, your entire display flips around – causing the Camera app to freeze for a second. This behavior has been fixed with the Google Camera application on Android 7.1.
Rotating the device from portrait to landscape results in the controls rotating, not the entire app UI. Flipping the phone 180 degrees in landscape causes a slight black screen, but only for a split second.
Android 7.1 feature spotlight: Camera no longer freezes when screen is rotated was written by the awesome team at Android Police.