I have installed Windows 10 a few times on my old iMac 5K 2014 and MacBook Pro 2013, I have also installed it in regular PC. Today, I decided to install Windows 10 on iMac Pro, given my past experience, I set aside 1 hour just for doing this. So I started the process, and just leave the iMac Pro alone doing its things, while coming to MacRumors to read and post, within 10 mins, the Windows 10 is installed while I am still doing my browsing on MacRumors!!!! I was speechless, I didn't think it will be this FAST!!!