title: Prevent MSTest from copying / deploying every dll
body: <p>When running MSTest from Visual Studio - the unit test execution time is relatively quick. </p>
  
  <p>When running MSTest from the command line, with /testsettings flag - the execution takes forever and that is because it spends 95% of its startup time copying the dll's to its Out folder. Is there a way to prevent this?</p>
  
  <p>The default Local.testsettings in the project has no modifications to it (which also means it is empty). However, if I try to use that same file from the command line, MSTest complains about missing DLL's that the Unit Test reference. </p>