The frames is actually not connected at all to the missions the perfect on duty results cheat options benefit.
Perfect on duty results makes it so that no matter what happens on a normal police officers response to a 911 call, it ends perfectly. This means, even in say, a mission where someone is siphoning gas, you can click to light a match and lean in to see what they're doing, and nothing bad will happen.
For some reason, it blocks our detectives collecting frames, frames are pictures which they collect. We're supposed to put them in the correct order apparently, to solve a different type of mission, an investigation. The cheat though just blocks them from getting these frames (clues).
That's what I found to be odd, because when I turn the cheat option off, I -will- get these clues, or frames. I might see if raising the professionalism helps keep them working perfectly in missions.
I'm still trying to find save game file locations for the gog version of the game. x3
[Edited by Aeterna85, 8/6/2016 5:37:57 PM]