Sometimes, simple events like updating your application may contribute to your application slowing down. You'll make some changes and it appears to be functioning normally for you, but the application may not be working for others. In these situations, analyzing HTTP parameters would help you to identify the intensity of an issue, so you can determine whether this affects a particular set of users or everyone. HTTP parameters like user ID, resource ID, and URL ID will help you debug the issue. 

To view HTTP parameters, enable Capture HTTP parameters under the Web Transactions Configurations in Agent Configurations. You can view these attributes under the Traces tab.