This isn't to say that others do not have legitimate problems, but since I really have't posted much lately, and recently read that 1.12 is going live soon, I wanted to post that I ran a perfect game on medium map, hard, against all other factions.
At the beginning, the game was glass-smooth, and later the delays from the beta-logging were definitely evident. Even with that, though, I didn't have one crash.
FYI I run an Intel i-7 with 4GB of ram, GeForce 470 and Windows 7 64-bit.
I am so looking forward to beginning work on the changes to the game itself!