Are they still haveing problems with nVidia cards as of patch 1.02? The way this game is described it sounds like a beta release.
Problem resolved in my case with beta pach 1.023... seem that new shader have resolved a lot of problems...
For a list of what have change with 1.023 and 1.024, take a look at http://www.matrixgames.com/forums/tm.asp?m=2379183 ...
Very important, download the upgrade where you have buy your game... version from matrixgames accept only patch from matrixgames and version from Impulse accept only patch from Impulse... don't know why but it seem that both distribution are incompatible... in fact, if you try to upgrade a impulse version with a matrixgames patch, it will not accept your serial...
Anyway, a lot of work was made... but some work remain... minor annoying thing and balance thing... modding have become more easy and maybe some multiplayer will maybe be possible in the future...
At the strategic level, the game is not so bad... but for the visual, it is very low for my taste...
And yes, like you wrote, the original release look more like a beta... now it is better... but it seem to become usual with a lot of games who are released early, before the majority of bug are crushed...