[quote=@DarkwolfX37]
*Perks up suddenly*
Wait. *Points at David*
Did you say that this guy can't jump time well? Who said that? I wasn't paying attention while you guys talked about that boring "saving a friend" junk.
[/quote]

If my theories are correct, it's more strenuous to go to another point in time than it is to change the speed. It would be because he's trying to control the Time Line he absorbed.