Unreal Freezes when try load static-mesh for procedural-foliage

new problem here… When I try to load a “static mesh foliage” for do “procedural foliage spawner” … unreal freeze when appear the loading bar … after 30 minutes still is in 0% and I cannot click nothing I just can shut-down it in windows process.

My workstation is
Nvidia geforce GTX 1070 Ti (updated drivers)
32 Gb Ram
intel i7-8700, 6 cores, 12 processor logic
motherboard Rog Strix Z370-H Gaming

Fixed … just stopping trying to load that same kind of meshes. Downloaded others asset meshes and with those it works