GTX 1060 bottlenecked?

[Candrujack]

I went for the MSI's GTX 1060 Gaming X edition, and when playing The Phantom Pain I noticed that the frames are really not where they should be.
My entire rig is as follow
I5 2500K @ 3.3, 3.8 turbo boost (I would OC but I had troubles with my Motherboard and it's not worth to replace my entire motherboard just so I could OC, or maybe it is)
GTX 1060 MSI Gaming X 6G
10Gb DDR3 1333Mhz.

I've seen people getting 80+ frames at all ultra while I get 55 while in crowded areas, I know it might not be possible to get 80 frames in those areas but I should at least be getting 60+

Is my CPU holding me back that much? if it is I might have to consider getting a new motherboard so I can overclock it.

 

[lucas_7_94]

What is the CPU usage when you have that lowest fps?

 

[Candrujack]

What is the CPU usage when you have that lowest fps?

Sry for the late reply, actually upon examining closely when I'm getting less than 60 fps my gpu usage is 50-60% while my CPU usage is 50-60% across all cores, is that good or bad? I don't get whether it's my hardware or the game? as I remember running it on my old 560Ti at 60fps while having just very graphically demanding settings set to med or high. Should't my cpu be hitting 90% or more in order to be bottlenecking?

 

[Candrujack]

MERGED QUESTION
Question from Candrujack : "Low FPS in games that should be running smoothly."

My build is as follows:
I5 2500K @ 3.8 (Can't OC)
10GB DDR3 1333Mhz
MSI GTX 1060 6G Gaming X
Gaming @ 1080p

Now while I realize that my CPU is old I never really expected it to be such a problem.
For instance, while playing MGSV The Phantom Pain, at everything on ultra, without v-sync and the effects option turned down to high because it's broken, I go as low as 50fps, while on my 560Ti I could get solid 60's by having lighting and shadows turned down. It's the same as here, if I turn down lighting and shadows to high I get 60 fps, but considering how powerful my card is, that to me is unacceptable.

The CPU requirement for MGSV is an I7-4790 @ 3.6, the CPU req for Mad Max is an I7-3770k which is about 15% slower than the 4790, is that really enough of a difference?

I've monitored the GPU and CPU usage and temps, temps for the cpu never went above 50 C and the GPU temps never went above 66 C, meanwhile CPU usage is about 60% across all the cores and GPU usage while I'm at 50fps is 60%.

So what's the deal here, is my CPU really holding me back that much, also I'm having trouble believing that The Phantom Pain needs more CPU power than the Witcher 3 which like Mad Max requires an I7-3770k.