Display Enlightment by NCX

The HP 24 Envy, 25" & 27" HP CW/er/es/f/XW series monitors are not advertised as being Flicker Free even though they do not use LED PWM Dimming (read about the side effects), regardless of high or low the brightness is set.  I checked for LED PWM Dimming with the Blur Busters Test UFO Blur Trail/PWM Test with 0-100% brightness settings in the Acer's menu. The lack of PWM is a good since PWM or Flicker ruins motion clarity (example), and makes some people suffer from health issues such as headaches, and/or eyestrain.