Question about HP Envy x360 14-fc0742nz

Does the notebook have PWM and / or temporal dithering? Pulse Width Modulation (PWM) is a technology that is used in many notebooks to control the brightness of the screen. The backlight of the display is switched on and off quickly to achieve the desired brightness. This rapid sequence of switching on and off can cause eye strain or headaches for sensitive people, especially if the frequency is below 250 Hz