Hi,
My settings of the s17 pro are: 16,3 volts on all the 3 chains. With frequenties used: #1 390 mhz #2 400 mhz #3 395 mhz tuning on chip does not work for me because red chip are moving around the chain. This means when you lower frequencies on red chips they are moving to another after reboot. And so this repeats etc.