Does not recognize all materials.

I have a mesh with 310 but when I import it to the engine as skeletal mesh it only recognizes 255 in the LOD0, and I want it to recognize all the materials.
I’ve been with this for months and I haven’t been able to solve it, please help me.

310 materials on one skelmesh is insane. you need to pack them somehow like texutremasks. your performance will be horrible even if it works. may I ask you what you have for a model to get to so many materials!? I have never use more than maybe ~15 (for a detailed car)