Fallout 4 is slow on AMD because of the godrays GW mechanics as i heard
Yup, my money is on that being the reason just like the witcher 3 except instead of over tessellated hair, we now have over tessellated light rays

Doesn't the game release tomorrow official? Amd release drivers on a Tuesday if that is the case I would expect everyone to not jump on the hate wagon just yet..
If no driver release tomorrow then by all means show your frustration.
This.