Do you happen to be on a laptop with an nvidia/intel card combo? If you do then you are in the same boat as a bunch of us and Ubisoft hopefully will have a fix for it. If this is your situation there is no workaround for you yet.
or....
If that is not your setup can try to delete your options.ini file in "Documents\My Games\For Honor" and let the game recreate it automatically when you next restart the game, also forcing the game to graphic defaults has helped some people..