Legolas8181 :
Struggling on old stuff I see as you can't have it at 1080p on Ultra without dropping frames.
It's 1360x768 and graphics settings don't make a difference, only 27% GPU usage. Regardless, a modern CPU should be capable of keeping it way above 60.
Anyway, it's up to you, I won't hassle you any more. It's clear you've made up your mind.
Overclocking helps somewhat, difficult to say how much exactly. It's also game dependent.