I followed the original post exactly but I still could not get Clover to boot Windows 10. I have a bunch of NTFS drives show up on Clover bootloader screen but trying to boot any of them has not been successful. I tried "Boot windows EFI" and it just brings me to a black screen with flashing...
Go to Clover configurator and change your symbios.
According to Nvidia site:
Release Notes Archive:
This driver update is for Mac Pro 5,1 (2010), Mac Pro 4,1 (2009) and Mac Pro 3,1 (2008) users.
BETA support is for iMac 14,2 / 14,3 (2013), iMac 13,1 / 13,2 (2012) and MacBook Pro 11,3 (2013)...
I have the same board as you and I'm on F10 and os x installation has been smooth. Do you have VT-d disabled already? Have you tried installing on Intel 's on-board GPU to see if it makes a difference?