I have Oblivion GOTY on my iMac, and its been lagging a lot. I can't figure out what could be making this happen. I have 4GB of RAM and 950GB free at the moment. I messed around with the graphics, increasing/decreasing them and it doesn't seem to change anything . I really want to get this working, please help me if you can! PS - I closed all other programs before playing too.