Upholstered dining chair with a semi-circular back

https://sakamobilya.com/urunler/magnum-konsept/magnum-yemek-odasi-takimi/magnum-sandalye-2/ 
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An OpenSubdiv modifier is assigned to an object in the scene:
in viewport - 0 iterations, during rendering - 2 iterations, the stack is not collapsed
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textures with individual names,
materials and objects with identical names
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Format: Max2017+Fbx
Render: Corona v12 (LegacyMtl)

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.