Datasmith model not showing any texture

Hello everyone, hope you are all doing well.

Now, I have a doubt, and luckily, someone here can help me:
When exporting any downloaded 3ds max architecture model via Datasmith and open them on unreal engine 4 for archviz projects, none of the materials work; they are all plain white. some of the things I notice in the workflow are:
1.- scene converter when opening the 3ds max project that I believe is because of vray.
2.-UV channel #1 contains degenerated triangles (in probably more than half of the elements on the scene)

I have no experience working on 3ds max at all and have looked for solutions but still cant fix this. So if anyone could give me a hint on this, I would be so grateful!

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