AWS + signalR (socket) + ASP.NET

We are using signalR in one of out websites which just reads data from Database which is on different server, not on AWS. We setup two instance for load balancing. Website running on IIS and built in Visual Studio 2013, 4.5 Framework. And only read data from SQL Server, which is on different normal OVH Server. This website has only one hub and people comes and join with socket signalR and then this website sending updated data from database to that connected user. That's all this aws website do. Nothing more, nothing less. Just read data from database and send to connected user via socket signalR. Now the thing is we live issue with this signalR and AWS. I strongly believe from server analysis that signalR connection is not removing automatically which it should if user is not connected. When we had this website hosted on OVH normal server without AWS or load balancing, it was working fine. But not users are just keep going increasing, never reduce 24*7. So looking for someone who has experience in signalR with AWS. Please apply to project only if you have worked on signalR with AWS, not only AWS please.