That's all fine and dandy till the users decide to pause, seek to a different spot in the stream or switch streams altogether rapidly. When a user hits "next"

That's all fine and dandy till the users decide to pause, seek to a different spot in the stream or switch streams altogether rapidly. When a user hits "next" to go to the next movie, it should start playing in less than a second or two. When a user seeks to a new chapter in the movie, the same thing. Your math works if the users passively sit and consume a stream without much interaction.