Kinda annoyed with my Windows 8.1 x64 Corp on iMac 27 2013. Got usb hub issues, which are only on bootcamped 8.1 (OS X works fine with it, aswell as notebook win7), some weird RAM issue that gives me only 6.2GB available memory out of 8gb. I remember that I had some issues installing Win7 on this imac getting BS, but I think that was cuz of external usb3 hdd and missing legacy usb3 drivers. BootCamp install should go fine on internal drive. So should I go for good old Windows 7 and may it help get rid of ****** bugs?