Daniel
In NP3’s case, the brightness control uses an old linear mapping that converts slider position to driver brightness values.
That mapping has one or two noticeable jumps,
- around the 50–55% slider position
- near 85–95%
which cause visible color shifts.
Newer mapping algorithms exist that avoid this, but they don’t appear to have been adopted or tuned for this display.
You can smooth the behavior without root (using tools like Shizuku) by inserting a few additional intermediate values so the slider changes are gradual.
PS1: This is based on my observations and understanding; I could be mistaken. I’m not responsible for any damage if someone applies these suggestions. Use any tools at your own risk.
PS2: I used AI to form the sentences.