Void world though maybe Void overworld just no terrain. Machine creates a portal... Maybe other side you spawn on a 3x3 cobblestone platform.
The idea is to offer you a new world with no terrain, generation, caves, mobs, etc to lag you. You could enable mobs or offer a option. But the biggest issue is you build in the sky or underground or anything you load mobs around you... You also view and see things like terrain that hits your fps.
I just want a place I can work my magic without the lag..
I also don't want myscraft or similar mod I want a mod literately that just does this only.