I tried correcting the Adobe Standard camera profile for the Canon G9 X Mark II camera. When the Saturation slider in the Color Matrices panel is set to anything other than 0 the image becomes overly saturated. Even setting the Saturation slider to -1 becomes overly saturated, which is of course opposite of what is expected.
The Canon G9 X Mark II DNG file was created using Lightroom CC 2015.12, which supports this camera model. I'm using the latest DNG Profile Editor v1.0.0.46 available here:
Digital Negative (DNG), Adobe DNG Converter | Adobe Photoshop CC
A Canon G9 X Mark II CR2 raw test image file can be downloaded here: Digital Cameras, Canon G9X II Digital Camera Test Image
Any and all assistance is appreciated!
All Saturation Sliders at 0
Red Saturation Set to -1