There are 2 possible reasons which may cause audio lag when streaming a movie:
1. Bad network: If the available bandwidth is too low, it may cause audio drops or lag. Please try a better network to see if there's any difference.
2. Under-powered computer: Our system requirement is a Dual core CPU. A low-end CPU such as Atom or Celeron may cause the audio lag. Please try to connect to a computer which meets or exceeds the minimum CPU requirement.