File download through WCF slower than through IIS

Question

The following method (in which I hopefully did not make any mistakes while dramatically simplifying it for this post) is working properly and set up using the Streamed trans

Answer 1

I took @Greg-Smalter advice and changes ConnectionBufferSize on NetTcpBinding using reflection and that solved my problem. Streaming large documents is screaming fast now. Here is the code.

        var transport = binding.GetType().GetField("transport", BindingFlags.NonPublic | BindingFlags.Instance)
            ?.GetValue(binding);

        transport?.GetType().GetProperty("ConnectionBufferSize", BindingFlags.Public | BindingFlags.Instance)?.SetValue(transport, 256192);