I downloaded AH2 Beta37 to my gaming comp. On this I had almost all of the updates for AH2 beta installed. Meaning, I did just download the full version and get rid of the old.
I seem to have noticed a gain in performance as far as small "ticks" or stutters in the game once in a while. I still seem to get them but on a much lesser scale. MUCH lesser...
On my other computer (which is less powerful) AH2 seemed to be running smoother. All of the settings are the same on nearly all my computers except of course for my laptop which I run with 256 text mem and the sliders are all set to mid range.
The one difference between my gaming computer and the others is that the others had only the latest full version of AH2 installed. They all seemed to have less of a "tick" or stutter.
Basicly I think; and I probably am wrong but anythings posible, that having all the updated installs rather than one clean full version made the game run better.