Regarding the voltage settings in windows - they definitely stay what they were set even after a reboot. I've manually set the voltage to 1.1V (nothing about the voltage in the .bat launch file), the PC froze and I had to reboot. After the reboot the voltage is still at 1.1V. I think this is worth looking into, because I've no clue what my default voltage is supposed to be, or whether it would return to normal lower voltage when it's idle.