I've created an Umbraco 7.1.8 in Visual Studio 2013 using MVC templates. When I edit the templates in Visual Studio the editor slows right down and VS shows a permanent 13% usage in Task Manager. If it helps, I'm using Windows 8.1 64-bit on a machine with a 2.3GHz quad-core cpu. Other projects work fine.
Any help/suggestions would be appreciated.
Jason