title: How to test performance / load of a modern angular application
body: <p>I want to load / performance test a web application which uses angular 6+ as the frontend-framework. The application is quite big and uses lots of wizards / modals etc. 
  I want to do some "real" e2e-frontend-tests (not just testing API-calls, but also js-rendering etc.)</p>
  
  <p>What are the current state-of-the-art approaches and tools to test applications like this?</p>
  
  <p>To clearify, i want to do some real e2e performance tests like e.g. open a browser in headless mode, open a wizard and get the time it takes until the wizard appears. Like frontend testing with selenium. I could do this with selenium too but i don't know if its the right tool. </p>