It most probably will, but it isn't guaranteed. It only will only help if the issue is caused due to slow read speed from hdd. If it's a different cause... For example, it could also be CPU, i have even seen my 8700k spike to 100% usage during BnS loading screen, that's the only time i have seen my CPU at 100% (except for stress test).
@Racingwind
You no grandpa of mine! The video helped considerably, at Mushins Tower and Jadestone Village i sometimes drop to low 50s for short moments, but mostly it's above 60 in those areas. GPU usage 45-55%, vram usage a bit bellow 2 gB at max settings 1440p. So 3 gB of vram isn't limiting BnS, i was wrong about that.
But my estimation stands. 1070 is enough to max BnS at 1440p (as long as the other hardware parts are appropriate) and play at the same fps as 2080 ti. Reason being that if you google 1070 vs 2080 ti, you will see that 2080 ti is only ~100% faster than 1070. So, while the math is rather ruf, the general point is that 1070 at 100% = 2080 ti at 50%.
The necessity of 1080ti/2080 to play BnS at max settings on 1440p is BS.
P.S
Can provide screens with my gpu usage, if necessary.