The Camera uses the HTTP Live Streaming protocol. This protocol is optimal for both the live video and for streaming previously recorded videos (those sent to the timeline).
6 seconds of latency are inherent in this protocol as live streamis sent through an encrypted connection from your Camera to yourdevice.
Please note that this does not affect the Camera's reaction time as the videos recorded still contain the start of the event. In this way, your Camera gives you all of the action.
However, if the live delay is too long, it is probably related to your Camera's connectivity.