Lowpoly PBR model.gltf file works good in WebGL
Model dimensions - 1529x711x493mm
Standard Metallness/Roughness Textures - Base Color, Metallic, Roughness, Height, NormalUnreal 4 Textures - Base Color, Normal, OcclusionRoughnessMetallic
4096x4096 png Textures
Verts - 980Polys - 943Tris - 1566