this is happening with unity as well, I have various spots where I feel like Im in a disco. I feel like the game is trying to test my brain to see if I will have a seizure. the shadow flickering needs to be addressed urgently. I don't know if its a driver problem or not, I would say it is, but nonetheless it is paramount this be fixed.
I see the specs in your signature. However, could you submit your full dxdiag and msinfo to the team? Also, please provide any images or clips you may have to the team. In the meantime, please try disabling SLI (if possible) as well as lowering the in-game graphics. You may also want to verify the game files to see if any are damaged or missing. Again, please be sure to provide the files to your local tech team here: https://support.ubi.com.