I am currently using a 13 inch Mac Pro with 2.7 Ghz Intel Core i5 processor and its graphics Intel Iris Graphics 6100. I downloaded windows using parallels successfully, and downloaded overwatch on it. However, as soon as I press the launch button, a black screen shows up. The overwatch background music is playing, but I cannot see anything. I changed it to dual processor, raised my graphics up to 2048MB and enabled vertical synchronization, but nothing changed. What is wrong? Thank you.