The pacing of this show is pretty damn consistent with most of its kind. There is always lots of flashbacks, rehashing old events, talking about who is strong and what each character believes should happen and etc etc. Its part of the formula. I also am surprised that this show doesn't take more time, as sometimes the events come quickly and right on top of each other with little of that BS recap of last episode that so many shows use to waste a minute or two before or after the opening song...

And there is no real "filler" so to speak of, unless you consider comic relief, character background and detailed analyzing of fighters / skills to be filler. I personally am annoyed by the overabundance of the 3rd element, whose master of over-use is DBZ, but don't consider it 'filler'. Filler would be the episode with Don & the Kakruk-whatever Rangers, as it is a total deviation from the current plot and gives a story that has almost no impact on any key characters.