Atorch DL24p (or pcb) vs DL24MP: function "Costant voltage"

[Filippo52]

Does anyone know why the constant voltage function on the model with a single mosfet type DL24P or DL24pcb is practically unusable because it oscillates between two values, while in the model with 4 mosfets DL24MP it works perfectly?

Is there a new firmware for the DL24P that can correct the problem or is there a hardware modification??

Thank you