title: Visual Studio: Why sometimes "Start Without Debugging" much slower than "Start Debugging"?
body: <p>I'm using Visual Studio 2010, C#, WPF. I noticed in some of my projects, "Start Without Debugging" is much more slower than "Start Debugging", maybe 50 times slower.</p>
  
  <p>When "Start Debugging", everything is normal, UI is smooth and responsive. But when "Start Without Debugging", every operation freezes UI for 30~60 seconds.</p>
  
  <p>What are the common causes of this problem? Thanks.</p>
  
  <p>(sorry, I can't upload my projects)</p>