GitHub - dawid-t/Mesh-Combiner: Mesh Combiner is a little tool which can combine different meshes into one mesh in Unity for reduce the amount of batches / draw calls, making your game more
Mesh.CombineMesh() results in different heights between objects - Unity Answers
should I use single or multible meshes for my levels - Unity Answers
How Anti Air makes use of the Unity - Combine Meshes functionality for optimization - IndieWatch
Your problems are not always what they seam: combining different meshe