Where is my bottleneck / what should I upgrade first?

Soleservivor

Reputable
Jan 20, 2016
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4,510
I have a decent at best PC that I am looking to upgrade. I don't know what I should upgrade first, and what is most important. As it is now, I get alright FPS (120) in non-graphic intensive games (CS:GO), and terrible FPS (20) in other games (Wolfenstein: The New Order).
PC Specs:
OS: Windows 7 x64 Pro
CPU: AMD A10-6800K APU 4.10 Ghz
GPU: XFX Radeon HD 7750
Ram: 8 gb (2x4gb sticks)
If you need anymore info just let me know.
Thanks