I just built a new system with a Ryzen 1700x all eight cores overclocked at 3900 Mhz, 16GB 2667 Mhz DDR 4 ram, Samsung EVO SSD, and an AMD RX480 4GB. I started this bad boy up with a new windows install and it runs slower on the same settings as my ole setup. The animation is sluggish for instance. The advisor will talk and twice the time it takes for the sound the animation will finally end. I lowered the settings from high to medium and it still a little sluggish. One improvement is the time between turns has improved dramatically late game. I suspect this has to do with having more ram.
I had A8-5500 quad running 3.2 Ghz, 8GB 1600 Mhz RAM, Samsung EVO HDD, and GTX 760 before and it ran more smoothly. Is it the video card or the processor? Perhaps a combination of both? Are there any settings I might try to get her working more smoothly?