Avion has absolute control of his body's time. it's just that, his body cannot handle it.
Making him too fast may burn his skin just from the air friction and condensation. For other objects, he can still control their time at some point, either double or half their speed which is Overclock and Underclock respectively.
But throughout his training with Darea, he had been meditating a lot and thought, if he can bring an object into the stoppage of time, would he be able to control its time as well as his body?
This, Avion has figured it out. There's a duration when the object is still considered his upon duration. If he holds it, he can absolutely control its time. However, his body won't be able to hold its speed and the object will disintegrate due to either impact or friction along with its unfortunate wielder.
After some experimentations, Avion has died and Darea has remembered all of this. Her servant's potential is crazy!
