TMS320F280049C: TMS320F280049: How to use HRPWM to achieve fixed dead time when frequency changes?

Hi everyone  :

My goal is to keep the dead time of PWM1A and PWM1B constant when the frequency is changed. And the duty cycles of PWM1A and PWM1B are the same.

When using ePWM mode, my goal can be achieved, but when I turn on HRPWM, there is a count of jitters.

(The HRPWM MEP Scale Factor Optimization (SFO) library has been used.)

Please give suggestions, thank you!