title: Xcode 4 - slow performance
body: <p>I have an issue with Xcode 4 really responding very slowly to user interactions, e.g. editing code, scrolling areas etc. This particularly happens with larger scale projects with many controllers/view files etc.</p>
  
  <p>I completely wiped the hard disk and re-installed Snow Leopard and Xcode the other week but steadily it ground to a frustrating response time again (over a number of days) disrupting workflow considerably.</p>
  
  <p>I have also on occasion removed the project's "derived data" via the Organiser -> Projects and this has had little effect.</p>
  
  <p>I'm wondering if there is anything I can do to improve performance other than get a higher specced machine in the first instance.</p>
  
  <p>FYI I'm running MacBook with Intel Core 2 Duo processors at 2GHz and 4GB of RAM.</p>
  
  <p>In case we need to upgrade I'd also like to know if people are experiencing this poor performance from Xcode 4 on well specced machines (which would make our hardware upgrade rather pointless as it's only Xcode that has any performance issue on the MacBook).</p>
  
  <p>If anybody has any suggestions or recommendations or could even let us know how improved hardware effects Xcode's performance on larger project trees then that would be extremely helpful and also a valuable resource for other devs in a similar position.</p>