We're running into the same issue, in terms of symptoms. We've
determined it to be an audio issue based on the logs we see from
chrome://media-router-internals/12:36:27.335mirroring.OpenscreenSessionHost:
SessionError (8), 1���������ۺ�ۺ�ۺ�ۺ�ۺ�ۺ�ۺ�ۺ�ۺ...
