Could be you GB over a hot spot or the opposite one never knows as I said before . Leaving GB where they have it set may be the best of two worlds . I am going to try running tracking and see what happens on the deus 2 .subeI stopped worrying about GB on the Deus 2. One day detecting I was doing well, good signals and good accuracy plus depth. For whatever reason, I GB and the machine wasn’t good as before. I shut it down and back on, then the machine was good to go.
So now I only do it if I start getting strange signals, could be the dirt, silent EMI who knows., or internal computer storage needs a clean out.