Originally reported on Github: [https://github.com/Unity-Technologies/usd-unity-sdk/issues/86|https://github.com/Unity-Technologies/usd-unity-sdk/issues/86|smart-link]

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It looks like the 'import' normals option doesn't interpret point vs vertex normals correctly. Unity expects the number of normals to equal the number of points. So in houdini, add a vertex split SOP (set to "N" and promote) after your normal sop. Then delete the N vertex attr. I sent a test USD file to @jcowles with a test case