实体框架挂起在加载的DynamicProxies上

I am trying to diagnose a severe performance issue in my application. It's been almost a week and I am not sure where or what is causing it, except today I noticed the following "Loaded 'EntityFrameworkDynamicProxies' line was holding up things for almost 2 minutes. What is this? Why is it so slow and how can I improve it?I am trying to diagnose a severe performance is