In that video, what he did was essentially lie to the machine before beginning to sweep.
Proper procedure would be to Auto Noise Cancel, then Auto GB, then turn Tracking ON. Or, start with Tracking ON, Auto Noise Cancel, Auto GB, and begin sweeping. Either way will work like it's supposed to.
I'd like to see a test done on ground like I have here, where it can dramatically change in 15ft. Set the machine up properly, and then monitor GB while sweeping over transitioning soil.
And if I do the same test with Deus in same field, a huge difference in results.
Deus will track loads faster to actual ground.