how many AJAX requests are reasonable per second?

  ajax, javascript, php, real-time, web

I’m writing a web application that has to be as fast as possible, and i’d like to send about 1 ajax request every 200ms because it should be a very simple real time game and requirements that have been assigned to me preclude me from using WebSocket, so i was wondering if could be applicable to send so much ajax request, even if use GET insted POST, and data to send is very short

Source: Ask PHP