I am working on a web-application which has few ajax components, sending asynchronous requests from the browser for few operations.
I am unable to simulate this behavior on the Silk Performer tool and the WebFormGet requests are getting processed sequentially. Any insights on how to handle this situation would be highly appreciated.

Please Note: The project is in a stage where majority of the scripting is done using the Http protocol and switching over to browser driven load testing is not a feasible option.