The perspective of the 3D view in colorthink is like a fish-eye.
As result, same delta E differences at gray axis and at the gamut border are looking much bigger at the gamut borders.
I would prefer a perspective with the virtual camera far far away and a strong zoom. This would lead to better graphical representation of Delta E values in the 3D view.
Can you may deliver such possibility with one of the next updates ?
Greetings from Berlin, Germany