In analysing the performance of a JSF2 (Mojara) page returning 200 tabular rows I'm seeing 50% of the time taken to respond being in just rendering. For the 4 seconds on a dev box, 2 are purely down to the rendering of this page. 

What is the best path to improve performance?

(I've been told to replace ui:repeat with jstl code?)

Due to the complexity of the JSF object tree - the profiler isn't telling me much.