Reyna chair:
560 x 520 x H 830 mm
https://thefields.ru/obedennye-stulya/stul-reyna/ 

Without Turbosmooth modifier:
Polys: 7,152
Verts: 7,169
With Turbosmooth iterations 2 modifier:
Polys: 229 328
Verts: 114,724

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.