So have not gamed on PCs/Macs at all and was just curious what are the settings I should use? I am playing the racing game Grid. There is ultra low, low, medium, high, ultra. I know my graphics aren't the greatest as it's a base model but could I get away with the settings on high or would medium be better? Could I jack something up like overheat my Mac if running too high (choppy gameplay maybe)? I have not ran it past medium look forward to your guys response.