We are migrating Sitecore 7.2 to Sitecore 9. When we do a load test with over 120 anonymous users in Prod environment, the response time crashes to zero after about 3 minutes and never recovers. No errors are thrown in Sitecore or Windows except for the message "HTTP Module is being initialized" over and over. Can anyone of you please help us in resolving this issue. Thanks in Advance.