10. Now I noticed problem with disappearing meshes on edge of vision: when you move camera fast enough you can see how meshes disappear. I've already encountered it - it occurs when you use too much meshes on the scene, and occlusion culling deletes them to quickly. Solution is rather to use larger meshes, and abandon small ones (it will also increase performance), or blend couple of small meshes into large ones - it is possible in engine, watch tutorials on that.