I am using dynatrace to find the root cause of performance issues I am seeing for some calls to my WCF application hosted in an Azure Web App. I can see in the request purepath that time is lost before the asynchronous call to my WCF method : elapsed time went from +52.2ms to +16.9s but not operation takes 16.9s in the purepath. It is as something was waiting before handling the request to WCF method. Did anyone encounter a similar issue ? Do you have any idea how I could find more information in dynatrace (or elsewhere) about what is responsible for my lost time ? Thanks.