I use O'Hare airport, one of the ten worst airports in the US. I never take a whole 45 minutes to get to my gate. Nor do I have any precheck or anything. I just pack light and check in online. Baggage dropoff and claim is what kills you.
ATL on the other hand....even with TSA pre I can take a full hour.
In fact in some contests these private guards performed 5x better than TSA employees in catching the bad guys/bad items while actually doing it lot faster.
I don't even want to think about trying to get through at a reasonable hour.