Intel Graphics Command - "Video Modes" DO NOT WORK. Inspiron 15 7590/i5/GTX 1650

Within Intel Graphics Command there is a "Video Modes" section video/video modes.

This section has 3 preview videos with various sliders to customise the video colours Intel Graphics Command

It's clear that only certain settings affect the video playback in the 3 preview videos, and also in Netflix (i.e. changing "input range" from limited to full, also the "Brighten Video", "Darken Video" but only sometimes :-P).

But NONE of the custom sliders (brightness, contrast, saturation, etc) affect anything.

I'm a video editor and simply want to have "flat", unsaturated colour profile, I've normally done this through Nvidia control panel - but I've just discovered that my new Inspiron 7590s Nvidia 1650 card isn't even connected to the screen OR the hdmi output, and it's all Intel junk.

I'm running a custom Win 10 x64 LTSC, which doesn't support Store/apps (though this, and other UWP Apps have installed without issue).

How do I remove the over saturation/contrast that Intel graphics apply to all video?

Thanks!

Morgs