Really? I was more under the impression that time slows down for any object as it moves faster. At the speed of light, time
essentially stops for a human being traveling at that speed. Any faster though begins to cause the person to move backwards
in time to create a balance between space and time where a user is always moving at a certain rate through space-time.
Moving too fast through space though causes one to move backwards in time as a counterbalance.
Thus, time isn't 'shattered' per say.
And to the OP, this depends heavily on how fast we are talking, and the limitations and constraints of the time control.
Can I freeze time? Does it tire me out? How long can I hold it? Can I move backwards in time? Or can I just slow down
time and fast forward time to a small degree?
Is my super speed light-speed? 500 mph? 50 mph?
I need more concrete numbers to make a decision.