Were there any changes to the base game with the release of the expansion? The game feels very different. The effects seem to have more impact, game looks richer. Hard to put a finger on. Was away for a few months and in that time I reverted my PC to windows 7. Either windows 10 was really stunting the visuals or some major change happened. Did DirectX get slipped in there silently or something?
Yep…DX11 has been added and is enabled by default now 
Sweet! The difference is dramatic.
There’s also an option for ambient occlusion been added to the settings…off by default. Enjoy