UnshaderedNodes.j3md has poor performance on mobile

Hi guys, I found that UnshadedNodes.j3md has very poor performance on the mobile terminal. Even if there are only a few simple models, I don’t know what caused it. The frame rate is only 10 frame rate, but if you change to Unshaded.j3md, it is very smooth. Is this a problem with UnshadedNodes.j3md?

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