I'm getting a pretty severe slowdown in game, but I can't seem to figure out what the bottleneck is. From what I can tell using my G12, my RAM and CPU aren't at full utilization, and its not just an FPS issue. Are there any diagnostics I can run to check?

What happens is the game is stuttering, going fine for a second then stopping. Mouse and graphics appear unnafected, though the tool-tips that the mouse brings up seem to be delayed everytime it stops (if I move the mouse right at the split-second "stop"). Only time I've seen anything like this was when I had a very large number of fighters sitting on a star as my "grand fleet" maneuvered to jump out to one of the local enemy planets. I figured then it was just the computer having trouble doing all the targeting calculations, but I don't think thats the case. This time around, instead of having a multi-stellar situation, I'm in a single solar system only with many (don't remember exactly, but 50+) planets in it. Maybe the tradeship calculations are slowing it down? But I don't get why that wouldn't be maxing out my CPU first...