I found this on a Microsoft Forum Posting – apparently the navigation bar was slowing things down a bit – and if you’re anything like me, you never use it anyway.
The navigation bar is this thing at the top:
Go to Tools > Options > Text Editor > C# and click the Navigation Bar check box.
You should notice a speed boost when you type code or use intellisense!
(Be sure to turn it off for HTML if you use Asp.net as well. Tools > Options > Text Editor > HTML)
(I haven’t proved scientifically that this speeds things up yet…)