Batching optimizes 3D scenes in game engines by grouping similar 3D objects into single batches, reducing draw calls and lowering GPU processing overhead to boost rendering performance.
It works by combining objects with identical materials and mesh data, minimizing CPU-GPU communication. For static elements like repeated trees or environment props, grouping identical static models is highly effective. For dynamic objects, instancing (a batching variant) applies the same optimization to moving elements. A practical first step is enabling automatic batching in engine settings when dealing with many identical static models.