Dear all, Diablo 3 (MAC version) is laggy when running on my mac mini (see the configuration at the end). But it performs quite well on my friend's iMac. We use the same default setting in D3 and the resolution is 1920x1080. Is there any reason? How can I improve the graphical performance on my mac mini? By the way, when running WOW on both machines, the performance on mac mini is better than on iMac. Here are the configurations of my mac mini and my friend's iMac: [mac mini] 21 inch Dell display 2.5GHz dual-core Intel Core i5 4GB memory 500GB hard drive1 AMD Radeon HD 6630M OS X Lion [iMac] 21.5-inch: 2.5GHz 2.5GHz Quad-Core Intel Core i5 1920 x 1080 resolution 8GB memory 500GB hard drive1 AMD Radeon HD 6750M with 512MB Thank you very much.