From my personal experience, as the PD's increase for me just means shooting too fast. By slowing down PD's should drop. Guess we all must find that happy medium where speed is at its fastest with the PD's being at there lowest. To much of either one is no good for it shows in overall time.
NRA Life Member, NRA Range Safety Officer, IDPA Safety Officer, USPSA NROI Range Officer
As you are, I once was, As I am, You will be.