Question Should i expect more performance?

[Planesteel]

I have a pretty good system i would think, and i get about 45-60fps in BFV at LOW except for textures and texture filtering. I get really shit performance. for what i was expecting from my system, i do plan on overclocking my CPU once i have a MOBO that's capable. But should i be expecting more performance as is??
MOBO: ASrock B365M Phantom Gaming 4
GPU: ROG Strix 1080ti 11gb VRAM
CPU: i5 9600k 3.7ghz
RAM: 16gb ddr4 2400 mhz
HDD: 1x1TB 1x2TB
SSD: 120gb
PSU: 700w Casecom GOLD

My GPU was second hand on ebay the guy owned it for about a year he reckons and was running "Fine" Upon receiving it the heat sinks looked damaged like burnt out etc and slightly rusted, However in speccy i get really good temperatures. 74 Degrees Celsius AVG playing Monster Hunter World at about 55fps MAX in the forest zone depending on the weather.

 

[prince_xaine]

What resolution are you playing at?

 

[sizzling]

What’s your cpu and GPU usage in game? What resolution are you playing at?
Are you sure the gpu is genuine, fakes are becoming a growing issue.

 

[Planesteel]

I'm playing at 1080p i'll check my cpu and gpu usage now

 

[Planesteel]

And i'm not sure if it's genuine, I don't know how to tell. I have a feeling it isn't.

 

[Planesteel]

This is a brief gameplay session just me tabbing in and out to see but i played for about 2mins consistantly to see the results for my gpu at 55fps @1080p in BFV

https://imgur.com/a/C8YrwiK

View: https://imgur.com/a/C8YrwiK
GPU

https://imgur.com/a/nWdeexv

View: https://imgur.com/a/nWdeexv
CPU

 

[Planesteel]

It also reckon'd my power usage was "Very HIGH"