Checking two AABB's for intersection is a very cheap operation Only then does Unity check if the collidergeometries also collide That means a meshcollider only consumes CPU cycles when its bounding box intersects that of another collider As long as nothing is near it, the collider type doesn't matter much for collision detection performanceThe Unity's NavMesh System is used to move objects in the game environment using pathfinding This object is an agent, and it needs information to recognize the world it is supposed to walk on This information is achieved by baking your scene, generating a "blue" geometric mesh representing the walkable area of your environmentちなみに、Unityのデフォルトキューブも8頂点ではなく24頂点。 Collider生成 残念ながら、いい感じにCollider2Dを自動生成してくれるものがありません!(collider3Dは知らない) Colliderも大量生成すると重いので、まとめてColliderを生成したいと思います。 Unity 建物内に衝突判定を設定したい Teratail Unity mesh collider 編集