How to create static mesh from raw mesh data at runtime?

Hi Guys,

we have a big problem in Unreal, we need to build meshes at runtime. The mesh data comes from the cloud and only from there (Vertices, Triangles, Normals, Material).
At the moment we are creating Procedural Meshes, but they are not sufficiently performant.
So the question is: “Is there a way to create static meshes for instanced static meshes at runtime?”

I appreciate any help.