I have a pretty decent computer(intel duo, 3,2gb ram, 360 mb video card), but still I get drops of framerates when too many ships are battling each other. How do I get the optimal graphics/performance settings. Are there some tricks to lower some settings that really improve performance but which you don't really see in the graphics quality? Currently I have maxed everything to the highest and have AA at 2x. Is there a big difference (in performance/graphics quality) with AA non-maskable (or even lower)? Should I lower a particular detail category to improve things without significantly hurting the look of the game?

Thanks in advance for all your help!