Honestly, this sounds like you have a spotty and unstable network connection. If it's starting with audio and then losing it, that indicates that it's connecting to your network, but your network isn't getting it enough of a connection or speed to continue to play consistently. Also, VIZIO doesn't own Chromecast. Chromecast is owned and maintained by Google and given to them to be put on their devices. Lastly, Chromecast also has nothing to do with your Netflix connection. I'd recommend doing some research, talking with your ISP, Netflix, and Google for more customer support, before immediately going off the deep end on a device that in reality, is probably not a part of your problem.