Improving/Resolving keyboard input lag with Visual Studio 2013

Solution 1:

I also experienced serious keyboard lag when typing with VS2013. For me, things got much better by uninstalling one particular plugin:

Tools --> Extensions and Updates -->  Uninstall Application Insights

I don't remember installing this plugin, but it's called Application Insights Tools for Visual Studio. The referenced page mentions that this extension is a preview, for what it's worth.

Solution 2:

I had same experience with VS 2013 ultimate.

It got much better when i disabled CodeLens feature.

(you can find it in Options -> Text Editor -> All Languages -> CodeLens -> uncheck Enable CodeLens)