ORIGINAL: diablo1
Well just reading others posts on their systems specs for one. I myself wait 5 years before I'll even think about upgrading and even then buy around mid level of the times since high end systems are way over priced and they just aren't worth it for one or two mainstream games that "might" use 50% of their capabilities. But, of course I can't be 100% sure of what anyone has unless they post them, but, I'd still wager most wargamers are below the high end computer systems vs those that play FPS and RTS games. I don't play FPS or RTS games so I don't need the high end systems either. Waste of money if you're not into those.
I had many reasons for upgrading three years ago. One of them was the native 1920x1080 resolution in my to-be new HDTV. Old pc even though it was mid to highend couldnt have handled that well in most games.
As for games there are plenty of graphics intensive wargames too. But of course if you stick to 2D wargames then you dont need high end PC.
But in anycase if people are having performance issues with this game it might be because of lack of gpu utilization. Its very taxing to run game engine on cpu.