Hello sillyfly.

Thanks for your reply.
I (edited original post) re-downloaded and re-installed on the main SSD instead of the secondary HDD, and it loaded fine this time.

Graphics card is GTX 970m. Driver is 361.91.

EDIT: Played for 3.5 hours, no problems (awesome game!).
EDIT 2: 8 hours ...

EDIT: I deleted the game from Steam, and redownloaded/reinstalled on the main SSD ("C:\") as opposed to secondary HDD ("D:\"). It loaded correctly this time. Time to play! I'll keep this post here in case its useful.

Hello!

Just brought the game on Steam.
Hit play.
Loading Gets to 68%? "Loading ...