Performance Update 4
Typing speed is now even better. We eliminated a few extra time wasters to keep it responsive even in very large documents. Also, we are changing how we do some thing in the background so they will not interfere with your typing. In general I can anywhere type inside a 300+ page document and Express keeps up with me. It actually does an OK job of this in general in 2.0, but we are smoothing out some rough spots that gave some people trouble sometimes.
One other change we are going to make for our Draft View-using friends: we will no long layout the page view of the document until you actually switch to it in Express. What this means is that if you open a file in Draft View, it will open much faster, but you might have to wait for a few seconds the first time to switch to Page View mode so we can do the initial typesetting. We will put up a progress indicator, of course, so you know what is happening.