Hi, I'm planning on purchasing a MBP and was wondering at what level of Graphics in the game, i.e. (low, medium, high, extremely high) can the game be played with no lag? The MBP will have 4 GB of RAM, use a NVIDIA GeForce with 512MB and have an i7. How well overall does RCT3 perform on the 15' MBP? Can it be played on the MBP? Thanks.