just a side note, it doesn't make a difference if you launch it from nivada or ubisoft it doesn't load regardless. the white/black loading screen after the ymir cutscene still appears and doesn't go away.
i would try to update your driver anyway. I've just loaded in. after the cutscene of ymir all i get its a white screen and laughter but my driver is out of date and i didn't even realise so im updating now and im waiting to see if anything happens.