Hi, regarding the color problem:
just read something about sRGB. This is a kind of compression with gamma encoding, see here:
Understanding Gamma Correction (cambridgeincolour.com)
Esp. the graphics after this sentence: 2. Gamma encoded images store tones more efficiently
(came there from here: image - Convert RGB to sRGB? - Stack Overflow
)
Perhaps this could be the source of the problem? It seems the G2 has an sRGB Panel:
https://www.panelook.com/LS029B3SX06A_Sharp_2.9_LCM_parameter_43937.html
Therefore the whole chain has to be in sRGB, else the dark tones have too less steps??? So if somewhere in the plugin is a conversion from sRGB to RGB the steps get too few in the darks? Just wild speculations…