How do I configure PBP 3 to take advantage of it's HWPWM function?


125KHz is only available with a pbpl compile

from the manual hpwm section
Frequency is the desired frequency of the PWM signal. On devices with 2 channels,
the Frequency must be the same on both channels. Not all frequencies are available
at all oscillator settings. For the non-long versions of PBP (PBP and PBPW),
the highest frequency at any oscillator speed is 32767Hz.
(Needed is a symetrical 125KHz (4mS/4mS) 50% duty cycle.)
every chip you have posted about on this subject is quite capable of that output.
your posted code has never been correctly setup to achieve that goal.
you have never acknowledged anybody's code corrections or explanation to achieve your goal,
you have never indicated that you have even tried them out .