9e7742db_ime_manipulation___Heroes_Wiki__Theory
[Citations] None [Notes] + It would take an absurd amount of power to stop time for the entire earth, but it wouldn't take nearly as much to speed time up for the user, which would essentially achieve the same effect. + Daphne could move when Hiro froze time. She suggested Hiro only slows it, and it was confirmed by BTE. - However, BTE also said this happens everywhere. The entire world freezes when Hiro uses his ability. + If he sped up time around him enough, for all intents and purposes he would have "frozen" time all over the world, if he perceived himself to be moving at a normal speed. + In a blog post Hiro (when explaining why in Godsend he appeared to be only slowing down time as opposed to stopping it) says, "Instead of Stop, I casted Haste". The term "Haste" implies that time was accelerated, not slowed down. • "Haste" is the name of a magic spell found in many fantasy role playing games, which allows the target of the spell to move faster. This would of course mean that this person would perceive the world around him in slow motion. [Theory] 
"Freezing" time doesn't stop time for the entire world, but speeds time up for the user until the point where they're moving so fast the entire world appears to have stopped around them.
Theory:Space-time manipulation - Heroes Wiki
Theory