UE datasmith importion caused crash

  I used datasmtih to import a model (386m udatasmith)(3.6G udmesh)  
  There are 83000 staticmeshs  in this model 

  My computer's memory is 32gb  
  It always happened that crash of out of memory 
  
  I want to ask  how to make my datasmith file into  2 or 3 files,so  I can import them one by one?