Has anyone with a 1080P display noticed that Rise of the Tomb Raider looks different on 4K and the Enriched Visuals modes? Is 4K mode downsampling it to 1080P?
Yes, 4K mode is downsampling and the Enriched visuals mode has no downsampling but has a few visual aspects improved:
Hardware tessellation has been added
Anisotropic filtering has been increased, they didn't say what level
Additional dynamic foliage
Increased LOD
Cutscene quality hair is present during gameplay
Sun soft shadows
Improved bokeh DOF
All that said, aliasing looks bad in the enriched mode, and all these improvements are pretty subtle all in all. Visual candy gained by supersampling far outweights all these improvements