Vinichem :
I have an MSI R9 390X an I7 4790K and 16gb 1333MHz of RAM. Sometimes in cities i reach 25 fps, and i saw a few benchmarks of the 390X and of the 390 that performed much much better, on the 390 the lowest was (34fps). Is it beacuse of the distance settings? I already downloaded the new AMD drivers.
because of gameworks it sets tessellation to useless levels
go into the catalyst control center, override tessellation to 4x
http://www.gamepur.com/guide/21111-fallout-4-pc-error-how-unlock-fps-add-add-219-support-change-fov-mouse.html
unlock the fps limit in the ini files like it says in that link
use the catalyst control center to limit the fps to 60
set godrays to medium
enjoy locked 60 fps smooth as a baby's bottom