I am running darks and noticed a horizontal banding present. I run the asi6200mm through my pegasus ultimate powerbox v2. (both power and data)

I then swapped only the power to a completely separate 12v adapter from everything else. And the bands were much much lighter. (almost gone,see below)
It's consistent across 2 sessions of darks with almost every other condition being the same.
thoughts on the explanation? Cause?
