Image Adjust low quality

[JuanPabloCuervo]

icon: Show External Settings
Window: Adjustments and Effects
Tab: Video Effects
Essential

[X] Sharpen
has amazing quality.
small Sigma levels give very pleasant natural image.
very good algorithm.
Not as advanced as Epson Scanners A.I. algorithm, but close with low CPU usage, Amazing!.
feels better than Unsharp algorithm in Gimp.

[X] Image adjust
very low quality, feels like 6-Bit.
lowers quality
changes White Point from 5700°K to 4200°K and cannot be adjusted.
None of the settings can be Reset to Default Values when clicking Control + Slider.
Hue is the most annoying.
There is No way to increase quality:
Tools / Preferences (Control + P) / Show (X) All Settings.

sometimes works,
but sometimes is useless.
has a strange sweet spot.