I am using the Unity Vuforia extension for Google Carboard. I have followed the steps to perform the camera configuration with the Google Cardboard prefab. However, I can see that almost half of the viewport appears in black (top and bottom). When I choose Viewer = "None" in the ARCamera though, I am able to see the full view, but with some flickering.
How can I overcome this? Maybe I am doing something wrong in the configuration or this is how it is meant to work.
Any help will be appreciated.