Please dont be offended but i would like to see proof.
I have a very similar set up and get less than 20fps in my park as my CPU hits 100% all the time!
I have a similar setup as well and I get in the 100s as well. 6700K 4.5 GHZ 32GB ddr4 3000 GTX 1080. Here is a crappy quality video I took with the phone so you can see the framerate.
https://youtu.be/bclJyFQS7Mg
There has to be something wrong with your drivers or installation of the game. You should reinstall your drivers and reinstall the game. My old 5 year old PC with a GTX 770 was getting around 25-40 FPS.