fms4.5 http broadcast delay is too long

HTTP broadcast delay is too long, I do a test in the LAN, send video using FME 3.2 the flow FMS4.5 server, use the sample folder under the videoplayer to play live video streams, using HTTP delay of 10 seconds or more,(RMTP play live rarely delay), who can tell me, how can I do this problem can solve the delay!