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Texture map question | Unreal Engine

Hi all,

I have basic question, I say basic because I think its basic for an artist in the game industry., which I am not.

When making uvw maps for Unreal is it better to have one large map, say 2048x2048, that has multiple meshes in it or have the mesh broken out into multiple pieces and the maps are a smaller size like 512x512. So for example 3 meshes broken out at 512x512 or one mesh at 2048x2048.

Hope that makes sense,
Thanks
Alex

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