I do not think that it is a problem with the GPU-driver. I also thought it could be caused by graphic card drivers but then i found out that the “Resource exhaustion detector” event was created in the event log each time my sim crashed. In the applications tab i see that the game crashed but usually you do not see the cause for the crash. But my system log showed this resource problem entry at the exact timestamp of the crash. You can check your event log to find out if it is caused by a bad graphic card driver or the mentioned resource problem.