Also quantum fluctuations have nothing to do with noclipping
They're a random temporary increase in energy in a specific area
Noclipping is large-scale quantum tunneling , and the only way that quantum fluctuations would influence it at all would be if they happened to part of the energy "borrowed" for quantum tunneling, and even then it would probably be from the environment anyway.
Also, 99% sure atoms can't "borrow" energy from entirely different universes?