Fixed the UVs for all meshes.
the UV island margin is set to 64 px, with a 32 px border margin, at a texture resolution of 4096x4096.
This should provide sufficient padding down to the 512x512 mip level, which is only expected to be used at very large viewing distances.
The UVs are not packed into a single texture atlas, so materials should be assigned separately: one material for the body, one for the eyes, and an individual material for each clothing item.