Textures used in these models use a relative path in order to auto-apply. To ensure they apply correctly, especially when combining the full pack, please place the sub-folders (HitchingPost, HorseTrough, Wayshrine, and WoodShed) into a shared folder called Textures. The path should look like this: ./Textures/Wayshrine/Wayshrine_4K_bcolor

The Unity prefabs all have 3 Levels of Detail, going from the High Poly model down to the Low Poly model. If your target system cannot handle the High Poly model, adjust the percentage zoom required to swap to this model under LOD Group in the Unity Inspector. If you notice your model losing quality too early, you can change this zoom in the other direction.