Alize chair:
570 x 570 x H 750 mm
https://thefields.ru/obedennye-stulya/alize-stul-svetlo-seryy/ 

Without Turbosmooth modifier:
Polys: 3,996
Verts: 4,018
With Turbosmooth iterations 2 modifier:
Polys: 126,688
Verts: 63,716

The Turbosmooth modifier with Isoline Display was applied to the required objects;
There is an FBX file (if necessary, apply the Turn To Poly modifier to the FBX file);
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.