Want me to post my saved game, I'm pretty far in, got almost all tech researched, have bunches of city's the game itself plays ok, my memory usage starts out fine but it seems like every 5 turns or so it goes up about 30k until it reaches well over 1000k memory usage, but its the same save game, starts out good and fast but gets slow really fast, then I reset, reload I'm good for 10 mins then laggy again,
I have a AMD Phenom II Quad and a 9600 Nividia on this machine, also using Windows 7 64-bit
Whatever you need I'll send it along