What are the common mistakes when mix PBR 3D models?

Common mistakes when mixing PBR 3D models include inconsistent material workflows, mismatched texture resolutions, and ignoring lighting compatibility—issues that break visual cohesion. Inconsistent workflows (e.g., mixing metallic-roughness with specular-glossiness) make materials react unpredictably to light. Mismatched resolutions (e.g., 4K vs. 512px textures) create uneven detail, with some parts too sharp and others blurry. Ignoring lighting: Glossy or metallic models need specific lighting—flat light makes them look disjointed. To avoid these, align all models to the same workflow first, resize textures to a consistent resolution, and test how each interacts with your scene’s lighting.