Models Increasingly Stutter When At High Coordinates

When modeled mobs move while at higher coordinate values, their movement becomes increasingly "teleport-y".

For example in my testing, when a mob is walking at around x=10,000 z=10,000, their movement is slightly jitter-y. When a mob is walking at around x=-21,000,000 73 z=-6,000,000, their movement is incredibly jitter-y.