Modder Pfuscher has released a new HD Texture Pack for Skyrim Special Edition. This new fan pack features 4K/2K high quality photogrammetry textures for landscapes, and is compatible with both Skyrim 2017 Landscape, towns, big stuff and Skyrim 2018 A lot of stuff of everything.
Source: N4G PC New 4K/2K high quality photogrammetry textures released for Skyrim Special Edition