First post, by Truth Unknown
The lighting is very noticeably wrong regardless of output API. My hardware is a Ryzen 2700X, 32GB RAM and a Radeon RX 580 8GB if that helps.
EDIT: Decided to put the somewhat unrelated things I had to do to get Mass Effect "working" down here.
If using Direct3D 11 (feature level 10.0) all output is black.
When using Direct3D 11 (feature level 10.1) and Direct3D 11 (feature level 11.0) videos are pink unless Fast video memory access is enabled.
On any working Direct3D 11 output, lens flares turn to blobs.
Using any Direct3D 12 everything appears "normal".