AFAIK MPPTs only do tracking while in Bulk. If there are any exceptions, let us know.
I don't understand that 100/1 panel and what that would mean. Once you go past Bulk then the MPPT controller forgets about Vmp and goes farther to the right down the knee of the IV curve to a higher voltage and whatever you get for watts.
I am unclear on how "demand" works in practice. I think the controller moves the voltage back up the knee to a lower voltage with more demand. Perhaps one of our better informed members can clarify all this.