This is because not all Chromecasts are created equal. If you have a "normal Chromecast" it works great, if you have an Nvidia Shield that comes with "Chromecas

This is because not all Chromecasts are created equal. If you have a "normal Chromecast" it works great, if you have an Nvidia Shield that comes with "Chromecast built in" it does not integrate with Home at all.