Well on my first highway run there were some fast curves. I pushed the car a bit on them to see if I could note any effect from the G-Vectoring Control. I couldn't which I guess that's Mazda's intent. Anyone been able to feel the effect?
Unless you can try it on snow, you'll not feel the G-Vectoring Control really kicking in.
If you're rounding a corner pretty hard, you'll feel like the car has it's brakes engaging or dragging making the car feel soft or dumb. In other words, the car does not feel out of control but moving in a steady direction.
I think you're confusing GVC with stability control. All that GVC does is control the throttle to reduce engine torque, thereby pre-loading the font suspension bushings.