Performance issue - Asp.NET core 1.0 deployed on IIS calling Web API

Hello,

We have following deployment in IIS 7.5

Asp.Net Core 1.0 RC2

Web API using Asp.NET Core 1.0 RC2

Calling Web API is taking around 1 minute instead of calling Web API directly from web browser which is taking around 0.7 milliseconds 

And when we deployed Asp.NET core 1.0 RC2 & web api n nginx in Linux, it works as expected.

So not sure what is happening on IIS side

Regards

Manish Joisar