May 02, 2006 01:53 PM|jbresler|LINK
Microsoft has developed some changes that may improve source view performance such as typing and arrowing through markup. We would like to have a few customers
test the change to verify it works for you. If you are having performance problems and would like to help test it, please email me directly via the Contact link above. The changes are under active development and not yet officially supported by Microsoft.
Any use will be at your own risk.