I got this game as well and I thought it was fun. All I have played so far was the "kill all terrorists mode" and enjoyed it up until they bumrushed me 6 at a time.
I was playing it on 800x600 and thought it was a bit "in my face" so I will drop back to a bigger resolution the next time I play with it and see iff the game slows to a crawl. Performance was fine for me except for when that insane "I've been hit smear/bloom/shock business kicks in. Thats to be expected anyhow.
Lue, tell me when you want to play a few Hamachi rouunds with this. I think that would be aces.