I second this. I have three VMs, Xp, 7, and 8.1. 8.1 is by far the fastest one, even with SQL server 2014 operating with the management studio in use too. I use dual screens in full screen mode.Runs perfectly fine, don't listen to those that write otherwise
Please explain why your don't think it runs perfect. While I don't have win8, I have run win7 on my Mac in both bootcamp and virtualization and it had run perfect, no problems.No version of Windows runs perfectly on a Mac, as Macs are not designed to run Windows.