User blog comment:ImperiexSeed/How fast is Zoom going to be?/@comment-3481504-20150927230121/@comment-6331988-20150929222238

He'll definitely be fast enough to kill a non-speedster, but he can't be so fast that he could kill the show's cast in a few seconds. I think he'll be fast enough to time travel, and he'll be able to toy with RF the way RF toyed with Flash in the start of Season 1.