Some of our foliage meshes appear black at lower LODs - but only to some

We recently added some foliage into the wild west, but came across a rather glaring issue.

With RenderFidelity set to automatic, at lower LODs the bushes appear black.

https://puu.sh/FtBW8.mp4

https://puu.sh/FtCkw.mp4

This only occurs however with certain machines. I believe it may have something to do with AMD GPUs?

On my machine, it’s fine:
https://i.gyazo.com/922886c4d7b107cd8be0f5812dbe1419.mp4

0:03/0:05

NEW

These are the specs on the problem client

AMD Ryzen 5 2600X
AMD Radeon RX 5700 XT
16 GB RAM

This would be one of the bush meshes in question

https://www.roblox.com/library/4798539612/RenderMesh

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RobloxScreenShot20200415_000751963

GPU: AMD Radeon R5 230

It seems to be happening to any duplicated geometry with inverted normals. (A way to make infinitely thin leaves).

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Would you please send me the orignial .obj or .fbx file?

BushModel.fbx (41.7 KB)

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