I have a huge code-gen’d EDMX and the designer opened in about 2 seconds compared to >30 in VS2010. The whole thing is much snappier in every respect and it’s a VM with only 2GB ram (although the hyper-v server is pretty powerful and i’m the only one using it now).
Is this the next generation gui framework? Is it WPF? Am I seeing something new that makes it fast?
A lot has been done to improve VS performance. Their blog has a series of posts that explain in more detail:
http://blogs.msdn.com/b/visualstudio/archive/2012/03/05/visual-studio-11-beta-performance-part-1.aspx
http://blogs.msdn.com/b/visualstudio/archive/2012/03/12/visual-studio-11-beta-performance-part-2.aspx
http://blogs.msdn.com/b/visualstudio/archive/2012/03/19/visual-studio-11-beta-performance-part-3.aspx
They don’t mention EDMX files specifically, but it probably has to do with improvements with loading solution files (part 2).