If you experience extreme typing latency and Visual Studio is using high amount of CPU, even when idling, check if you have “Browser Link” enabled. I started experiencing latency when typing, after working just 5 minutes in Razor Views. CPU usage was consistent at 37-40%. Browser Link is a new feature in Visual Studio 2013 and enables dynamic data exchange between Visual Studio and your web application.
If you are interested in knowing exactly how Browser Links works, you can read more here.
Or if you just want to disable it straight away, do as shown in the picture.
