I think that I, too have similar thoughts, and even worries wrt the surveillance camera footage from KZ's building.. My worries are not in the system being "time lapsed" .. The apt's surveillance camera configuration is, IMO, not the troublesome issue, here.. IMO its the fact that this configuration now has somehow created this escape goat scenario, so to speak...with it giving KZ the benefit of this now very much believed scenario of Kelly Dwyer actually having left his apt alive, well, and of her own free will..and it is simply the configuration of his apt surveillance system that is the sole cause for why there is no documented proof of her leaving/exiting, as its documented of her entering/arriving with him at his apt..
I, at this point in time, am sticking with the little known facts, as well as taking my lead from this extremely active, ongoing investigation by LE.. KZ doesn't get the benefit of doubt with this newly found possibility..not from me(and that is what I'm expressing is my own personal opinion on the matter..vs..this being a court of law).. For now this configuration does not factor in, in being a reasonable explanation for why Kelly Dwyer did in fact leave that building alive, well, and of her own free will(as KZ desperately needs everyone to believe is FACT)...it just happened to not have been caught by any of the 20 something surveillance cams..
All jmo and will again reiterate this is an opinion.. Opinions, theories, discussions, etc is what takes place here.. This is not a court of law, nor have I seen anyone even attempt to claim, or allude to their opinions somehow equal PROOF of ANYONE'S GUILT/INVOLVEMENT.
**Please forgive the limitations that come w/my posting via mobile ATM**