Upgrading/Finding Bottle Neck For Old PC

[jpol24]

Hello, I've been gaming on the following system for the better part of 6ish years:

• 
  Mobo: Gigabyte Z68AP-D3
  CPU: i5-2500K (not overlocked)
  GPU: EVGA GTX 970 SSC ACX 2.0+
  RAM: (x4) 2G DDR3 (not sure how to find manufacturer w/o opening case)
  Storage: (1TB, HDD) Seagate ST310000528AS

I have some concerns over a potential bottleneck somewhere. I'm not the most technically literate when it comes to PC parts, but from my experience on some select games I think there's a CPU bottleneck.

Two games I play: Skyrim and CS:GO. I am able to mod Skyrim intensively, with all the fancy shaders and what not, and pull a steady, smooth FPS at max settings. On the other hand, even when I pull my settings to bare minimum on CS:GO, I am only able to achieve ~60 FPS. Oh, and it's very stuttery.

I've down some digging into my CPU and GPU, and the benchmarks show that both have shown average user performance in CS:GO to be in the 100-200 range. Is the bottleneck another component? Or did I goof up my settings somewhere?

 

[Ralston18]

Part of your post seems to have been cut off: " concerns over a potential...."?
What version of Windows are you running?

Task Manager and Resource Monitor will provide some insight as to what is (or is not) happening.

You can find out more about your computer by downloading and running third party utilities.

E.g., BelArc Advisor, Speccy, CPU-Z. HWiNFO64

 

[jpol24]

Part of your post seems to have been cut off: " concerns over a potential...."?
What version of Windows are you running?

Task Manager and Resource Monitor will provide some insight as to what is (or is not) happening.

You can find out more about your computer by downloading and running third party utilities.

E.g., BelArc Advisor, Speccy, CPU-Z. HWiNFO64

I am using Windows 10; home edition I believe. The missing chunk of my post might have been because I am a new user? Hopefully, it's there now, because I can see it.

Ok, so while not running the game my CPU and GPU usage hover around 10-20% and 0-5% respectively. While running the game they hover around 50-60% and 0-5% (respectively).