The Red Dead Redemption 2 HD Texture Pack by modder ‘nigeez’ updates the game’s terrain textures. Contrary to other HD Texture Packs, this one includes original assets rather than ones that have been artificially upscaled.
More specifically, this collection contains 2K resolution Albedo and Normal maps. The AO, Roughness, and Heightmaps, on the other hand, are 1K.
Please be aware that this mod only presently covers important story areas. Expect some regions to still retain the vanilla textures since this isn’t a complete replacement for the landscape textures. For instance, everything south of Blackwater is vanilla.
From this page, you can download the HD Texture Pack.
Source: dsogaming