ProperlyPsychotic :
SgtScream :
Ok, what else have you tried then?
Changing settings in game, turning NVIDIA Vsync to fast, rebooting, changing power plan on PC and in NVIDIA control panel, turning up power and temp limit in Precision X, turning off shadowplay, that's all I remember.
You have 22% background usage on your userbenchmark. That is pretty high for a 4590. It will hurt performance but that performance hit should be spread out on all your games, not just this one. I would check your background processes and see if you have any running that should not be there. Your CPU is scoring in the 26th percentile, which is not very good at all. Given you have a locked chip, most of the 4590 scores should be very similar. This could be due to the high background activity
Too be fair, I have not played Sniper Ghost Warrior, so I cant comment on how it should perform nor how CPU heavy the title is. But the Recommended CPU requirements for the game are chips with 8 threads. So it would lead me to think that it scales well with more threads. While the minimum is only a 3240, you easily meet the minimum requirements with your 4590. But with the high background activity coupled with the fact that the game seems to like at least 4 threads, there may be your issue.
If you cant track down the high CPU usage in task manager, then run a Anti Virus scan and a Malwarebytes scan. It does not sound like a virus, but there are some cryptocurrecy bugs running around that work in the background at a low level which makes detecting it difficult.