OttoniBastos on 09 September 2016
I mentioned in another thread but CPU is PS4's bottleneck.
Having a better GPU allows bigger resolution and improved graphics but things like physics and AI are usually dependent of CPU.Sony doubled the GPU power with Pro but only improved the CPU by 30%.
This 30% improvement is not enough to allow twice the physics/AI calculations per second.(which is required to have twice the framerate)
Of course maybe if devs put some effort they could use GPGPU or some similar technique to reach 1080/60fps but most devs will just make quick patches because they don't want to lose time(and thus money) with this kind of costumization on consoles.
