The model is made for anti-aliasing, the stack is not folded. Antialiasing modifier is enabled (viewport display - 0 iterations, render -1-2 iterations) Polys: 119384 Verts: 144078 -max 2015 corona -obj (it is necessary to apply MeshSmooth (1-2 iterations) to some objects) -mtl -textures -material library For Corona render, it is recommended to install version not lower than 1.5, since the glossiness of materials is configured