World rendering and movement gets worse the farther out you go, movement becomes jitter after about 200,000 blocks, and mobs start falling through around 10,000,000, and the world becomes broken around 20,000,000, and it breaks depends on where you are. Movement becomes broken 5,000,000. And this is from me teleporting around a fresh world in creative. This is most likely caused by a floating point error. Please fix this, since otherwise the infinite world is just a small 100,000 meters by 100,000 meters, or just 100km by 100km.