Delay after reconnection to NGINX

We have NGNIX Server with flowplayer. Folowplayer has configuration to make buffer for 0.5 second. But if I disconnect the NGINX server from the network and reconnect it again I have a big delay on the client more then 10 seconds. Is a way to reduce the delay or force the player to reconnect to the NGINX and to play from the time the NGINX was reconnected? Thanks.