I have installed Sierra 3 times now on my setup and each time the installation goes smoothly with no problems at all besides my graphics. I got a brand new ASUS 1080 Ti OC Strix and while it works perfectly in windows, it has yet to load the pascal drivers in Sierra. It loading the native drivers after my initial install after which I install the new pascal drivers and it tells me it successfully installed and prompts me to reboot which I do but then, it loads back up to the native drivers. I ve picked the Nvidia one from the menu bar several times but after I reboot it keeps staying in native driver. I have done the nvidiaweb check to true option and installed the latest of clover as some of the tips here have suggested but nothing so far has worked. please help. I really love this card and I would hate to imagine its a card issue.