SOLVED: How can I reduce ADC jitter

[Demon]

1. remove the PWM and use a fix resistor for backlight.

Used 270R resistor for backlight, disabled all PWM/HPWM functionality on code:

- ADC reading jumped to 430, no longer in the 60ies.
- ADC reading for pots also jumped up near 400, which is what I expected for pots near 50%.

(pot reading still went from 0 to 1024 before, so don't know what happened).

ADC reading on V/D still jumps from 428-430, turned power OFF and back ON, now it's 444-447, slowly creeping up as I type, now seeing 450 blink.