Physical PBR Textures are designed as production-ready, physically-based rendering assets compatible with a wide range of 3D software. These textures are typically offered in large collections categorized by material type—such as stones, fabrics, wood, and concrete—and are characterized by their seamless tileability and high resolution, often reaching 8192×8192 px Core Technical Specifications
Always check your UV mapping. A beautiful wood grain texture will look fake if the planks are scaled to be three feet wide. Use real-world dimensions whenever possible. cgaxis pbr textures