I'm sure this has been posted about 1000 times but out of curiosity, should I be getting this massive lag in mid-to-late game? If I switch to strategic view the lag disappears. It's almost unbearable.

I'm using a core i7 950, 6GB RAM, a couple GTX465's and two SSD's in RAID configuration. My wife has a similar setup, but with Radeon cards and no RAID.

Is there ANYTHING I can do that will fix the lag, without having to play on strategic view?