"16GB DIMM DDR4 clocked @ 2666 MHz " with cl19-19-19-19.
Very slow ram. 3600 with cl16 at least would be better.
And : CPU seems to underperform.
What's the temperature of it while gaming and in idle?
What's your CPU-Cooler and PSU?
You really should get more than 200 fps( with a 9700k - perhaps overclocked?):
View: https://www.youtube.com/watch?v=FMyxoolgMNg
Look into taskmanager, if something is using you CPU.
If you need help with overclocking, I cannot help you, because I do not have an Intel CPU. But you can google for such informations or there are a lot of people in the forum, who might help you.