I was playing for about 30 minutes last night, and everything was going just fine. Then the frame rate started getting worse and worse - like a memory leak. It got so bad I couldn't play. I restarted the game, but it started up just as bad. I turned my computer on tonight to play and it again started in this ultra bad frame rate state. I have changed nothing on my computer. I've dropped the graphics quality to low, which helped a bit. I have shut off all other processes in the background. Nothing has worked - anyone else having this issue.