Hi, it's been a while since I've used this forum. I'm glad there's still an active community willing to help other TW players. Anyways, I just purchased Shogun 2 along with Fall of The Samurai for Christmas and I've experienced the issues stated above.
Specs:
Motherboard: MSI 970 Gaming
RAM: G. Skill Ripjaws series 8gb (2)
CPU: AMD FX- 8350 Black Edition Vishera 8-core
GPU: Radeon R9 390
PSU: Rosewill Glacier 700W
Optical disk drive: ASUS DRW- 24B1ST
HDD: 2 TB Seagate Desktop
SSD: SanDisk Z400s 256 GB