Concrete old stairs Low-poly 3D model

The model is decpicting a stairs made by 5 unique steps (repeated then), 2 unique edges, and a base terrain. The model comes optimized for games, in particular for Unity (there is already a Unity package with LOD). Textures maps composing the PBR materials are in 4096x4096, and are two main types, old concrete and ground, with a total of 3 and 2 variations each. Follows the list of features and details:

Terrain LOD0 Verts 53K Faces 60K Tris 107K Terrain LOD1 Verts 26K Faces 41K Tris 52K Terrain LOD2 Verts 10K Faces 19K Tris 21K Terrain LOD3 Verts 1.6K Faces 3.1K Tris 3.2K

Step_1 LOD0 Verts 11K Faces 13K Tris 22K Step_1 LOD1 Verts 3.5K Faces 6.5K Tris 7K Step_1 LOD2 Verts 1.1K Faces 2.1K Tris 2.2K Step_1 LOD3 Verts 343 Faces 668 Tris 681

Step_2 LOD0 Verts 8K Faces 10K Tris 17K Step_2 LOD1 Verts 5.6K Faces 10K Tris 11K Step_2 LOD2 Verts 1.7K Faces 3.3K Tris 3.4K Step_2 LOD3 Verts 402 Faces 762 Tris 800

Step_3 LOD0 Verts 7K Faces 8K Tris 14K Step_3 LOD1 Verts 3.6K Faces 7K Tris 7.3K Step_3 LOD2 Verts 1.3K Faces 2.4K Tris 2.6K Step_3 LOD3 Verts 338 Faces 644 Tris 672

Step_4 LOD0 Verts 5K Faces 10K Tris 10K Step_4 LOD1 Verts 3.5K Faces 7.1K Tris 7.1K Step_4 LOD2 Verts 1.5K Faces 3.1K Tris 3.1K Step_4 LOD3 Verts 397 Faces 790 Tris 790

Step_5 LOD0 Verts 10K Faces 21K Tris 21K Step_5 LOD1 Verts 5.7K Faces 11.4K Tris 11.4K Step_5 LOD2 Verts 2.3K Faces 4.6K Tris 4.6K Step_5 LOD3 Verts 415 Faces 826 Tris 826

Edge_1 LOD0 Verts 7K Faces 13K Tris 15K Edge_1 LOD1 Verts 5K Faces 8.7K Tris 10.1K Edge_1 LOD2 Verts 1.9K Faces 3.6K Tris 3.9K Edge_1 LOD3 Verts 282 Faces 553 Tris 558

Edge_2 LOD0 Verts 5K Faces 11K Tris 11K Edge_2 LOD1 Verts 3.4K Faces 6.9K Tris 6.9K Edge_2 LOD2 Verts 1.6K Faces 3.3K Tris 3.3K Edge_2 LOD3 Verts 325 Faces 642 Tris 642