After planning a game on a gigantic galaxy, with abudant planets and stars, it tended to slow up after playing in about mid-game , which I took to be because of the fact the game had to managage an enourmous amount of planets and 9 races as well. But when I played on a large galaxy, with planets and stars set to rare, the same thing happened. After playing for some time the frame rate dropped considerabiliy, and the game was also very slow. The interesting thing however, was this has only happened after installing patch 1.1. I had only experienced very minor frame rate issues before, and never a single slow-up. (in 1.0x)