Hey so sorry SupportiveEntity. This is a bit late, but unfortunately I tried both solutions and they did not work. The mountains in the background are still low poly and the rock on the left side of the render is still missing. 
Hey so sorry SupportiveEntity. This is a bit late, but unfortunately I tried both solutions and they did not work. The mountains in the background are still low poly and the rock on the left side of the render is still missing.