Response display delay


I’m developing a text based game using Twitter as the interface.
I have a problem that even though I reply pretty quickly to twiets send to my bot, max of 10 seconds, usually less than 5, it takes usually a minute sometime more to see the reply.
I try both the web site client and the iPhone application. The best result were in the iPhone app when I lock the screen or close the application I got the response via push notification pretty quickly. But if I stay in the app it takes at least a minute.
The web site was the worth, usually more than a minute.

If the delay will be so great it will make the game experience worth. I there something I can do?

Thank you,