After installing ASP.NET MVC 4 Beta, I was experiencing some strange behavior. Attempting to cut and paste a line inside the cshtml/vbhtml editor resulted in a wait of about 20 seconds. I had the problem in all my Razor files both for ASP.NET MVC 3 and ASP.NET MVC 4. After removing the ASP.NET MVC 4 Beta, everything was back to normal.
Anyone who has a good solution?
Note: I found this post(http://blogs.msdn.com/b/webdevtools/archive/2012/02/27/vs2010-sp1-mvc4-beta-workaround-for-cshtml-vbhtml-editor-s-long-pause.aspx) by a Microsoft employee, but the workaround he suggested(compiling the project) did not solve the issue for me.