title: Slow down browser rendering
body: <p>Is there a way to slow down browser DOM rendering and JS execution for development so we can see which parts of the website are too JS intensive and might be slow on slower machines? Maybe an extension for Chrome/Firefox for Linux/OSX?</p>
  
  <p><strong>Some clarification</strong>:</p>
  
  <blockquote>
    <p>It's not about connection or testing the speed of the browser! It's just for our developers to see which parts of the page are rendered slowly or are "glitchy". For example when you use ajax and you are loading something you show a loader, but just after the loader is shown the loaded part is shown too. We want to see that in slow motion. Like when you press SHIFT in OSX when doing Expose.</p>
  </blockquote>
  
  <p>PS. I did find some articles on delaying Internet connection, but that's not enough in this case.</p>
  
  <p>PPS. Loading everything in VMs didn't work for us.</p>
  
  <p>PPPS. Using slow down code like proposed in <a href="https://stackoverflow.com/questions/7840338/javascript-code-for-making-my-browser-slow-down">Javascript code for making my browser slow down</a> is not the best option in my opinion.</p>