Chair Grace:
615 x 600 x H 910 mm
https://www.fedomo.ru/product/stul-greys-grace-360-grad-cvet-kapuchino-pena-172-g1229-7-tkan-shokoladnoe-zoloto-disaur-m-city-64845_609208/ 

Without Turbosmooth modifier:
Polys: 7 024
Verts: 7 196
With Turbosmooth modifier iterations 2:
Polys: 223 584
Verts: 112 710

Displacement map is used;
Turbosmooth modifier with Isoline Display is applied to the necessary 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 use version no lower than 1.5, as the glossiness of materials is set considering PBR.