The Flash player built into the Red5 Pro website shows a delay between the subscriber and the broadcaster. What the subscriber sees happened later than when the broadcaster did it.
There is a two-second buffer built into the Flash player on the Red5 Pro website. You can edit the default buffer time in the host page: https://github.com/red5pro/red5pro-server-frontend/blob/master/src/webapps/live/
Go to line 7, and edit the value from "2" to the desired length in seconds.