A simple chair modeled in Blender 3.5 and rendered in cycles with 512 samples. I updated the textures to one for the entire model consisting of the required PBR maps.
BLEND (Blender, filesize: 64.9 MB), OBJ (OBJ, filesize: 68 KB), GLTF (glTF, filesize: 85.7 KB), DAE (Collada, filesize: 148 KB), STL (Stereolithography, filesize: 2.53 MB)