Testing websocket connection in multiple tabs makes the page upresponsive

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ASP.NET

Javascript

IIS

WebSockets

hi
I am trying to test the memory consumption for multiple websocket connection to my webpage. The website is hosted in local IIS server. I load the same page in different tabs and establish a websocket connection for data transfer. Problem is it only allows me to do it on three occation. When i open the page on the fourth tab the page does not load and keeps loading. I tried seperate browser profiles also but same result. If i close one of the previous tabs, the fourth tab which was showing loading, immediately loads.

Can anyone please help. Do i need to configure something on IIS or my application?

PS: My code and app runs fine in windows server but its causing problem in windows 10

Thanks