Looks nice! Word-break is something I've never implemented in my font system for some reason. It's probably is your text-formatting that's doing it, but 15FPS shouldn't really matter.

Btw, about your last post. Detecting it on certain cards wouldn't help. When I made my first GUI a couple months ago I had the problem with other computers not looking right and it was because I wasn't offsetting by 0.5f. Now, in my new GUI the first thing I did was put in the offset code and now it's throwing everything is blurry. My advice (which I'm going to follow if I can't get my GUI totally fixed) is to go with either fixed size controls, or color only controls with fancy shaders (add glow or something.)

I had the same issue with my text rendering at times. The solution I found was to cast any results of my calculations (i.e. anything with multiplication or division) as an integer. As long as it's positioned on a whole number and only then shift it by 0.5 it seems to work.