The best solution is, probably, to bake the mesh as a Static Mesh (using the Modeling Tools, for example) without material tessellation anymore, as, anyway, it’s expensive. So you would gain detailed geo + RT shadows + performance.
The best solution is, probably, to bake the mesh as a Static Mesh (using the Modeling Tools, for example) without material tessellation anymore, as, anyway, it’s expensive. So you would gain detailed geo + RT shadows + performance.