title: AutoMapper CS File Extremely Slow in Visual Studio 2015
body: <p>I have a solution with 7 or 8 projects, none of which contain anything particularly exciting and all perform as well as you would expect (and indeed as well as other projects I have used on my current machine).</p>
  
  <p>However, whenever I open either one of the AutoMapper MappingConfiguration files, Visual Studio grinds to halt, moving the cursor one space takes minutes at a time and trying to write code results in lots of swearing - lots and lots and lots of swearing.</p>
  
  <p>It seems to only be this <code>MappingConfig.cs</code> file. It is isn't even that large - maybe 30 mappings (<code>cfg.CreateMap&lt;Bar,Foo&gt;();</code>) and in total 350 lines of code.</p>
  
  <p><strong>Has anyone experienced slowing of Visual Studio whilst using AutoMapper?</strong></p>
  
  <p>AutoMapper is 4.2 I believe and I am using Visual Studio 2015 Community Edition.</p>