Calvin ✨

Some key Unreal specific optimisations from last night's talk:

Import settings generate data you may not use. Turn off... Collision geo. Adjacency buffer if you are never subdividing mesh in shader (hint, don't). Reverse index buffer if you are never inverting your mesh by scaling negatively.

turn off generate shadow map UVS if... you are using dynamic lighting without baked shadow mapping. If you are have uvwrapped the mesh with no overlaps in 0-1 UV space, just reuse channel 0 uvs. Set this in the mesh (default 1- change to 0)

Rather than subdivide your mesh using a shader, subdivide the mesh before importing. This is cheaper, but also lets you put the polys were you need them.

The default unreal mannequin has 42,000 triangles, most of which are hidden and by default has no lods. Open the mesh asset and under LOD0 reduce it down to around 10-25 percent, hit apply and it appears approximately the same but is in the 4 to 8 k range.

Always use material instances instead of materials (with node graphs) in your scene. Don't leave textures in your material graphs directly as they are always loadee when that shader is used, even if the instances don't use them. Instead plug in some small place holder maps