I'm testing in browser so I can't directly edit my save, but with high enough multipliers the time scaling with stats is easily visible. Effect scaling definitely exists, because the flux maximum jumps I was seeing in the brothel before any charm magic were ~2000 and the action supposedly supplies only 1500 total (and flux lattes make this really obvious but I've had charm magic for most of the testing), but I have no easy way to quantify it or to say how it works for anything but +Flux.