Ye,get rid of 980 and buy normal 1080. And 32GB RAM. I have this and Kavala is 1fps at 1st drivethrough,then around 20-35. Also,ultra or lowest settings doesnt matter,FPS doesnt changed. Also,the PC is from Dec 2016.
i7-6700K @ 4.3 GHz
Gainward GTX 1080 Phoenix GLH 8GB GDDR5 @ 1746 MHz...