I have tried to reproduce the problem, but for some reason it doesn't happen not matter how close I try... I have a 3060 (12) with a Ryzen 5600.
My Settings : Shadows Ultra 4096 , Shaders Ultra ; Texture, PostProcess and Water High ; Detail Off and AA x8.
I tried several different locos, good and not so good, but they all look ok. In this case the Rocky Mountain cabin:
This may have to do with the particular cab, meaning the age of the content, which explains why this shows up with older assets but not this one. Newer content with PBR textures and better meshes may not have that annoying anomaly.
This may have to do with the particular cab, meaning the age of the content, which explains why this shows up with older assets but not this one. Newer content with PBR textures and better meshes may not have that annoying anomaly.