So for my SMP server we are going to do a scale down version of the overworld in 3D for our nether hub. Its going to be a replica of our world but 1/8 the scale of it. I don't need any trees or structures but just the basic terrain. I've tried build //scale in builders utility but its to much of a monumental task to compute. Is there any mapping programs/custom world generators that can generate a world at 1/8 of the original scale or that can just shrink down massive areas of terrain.
Im using 1.15.2 and the seed to my world is 5824646491735756214