1. Do I need to increase the voltage? Its at 1.356. The reason I ask is because it would seem to make sense that if the cpu is using more energy, it would need more voltage.
You already have increased the voltage by just upping the multiplier and leaving the vcore set to auto, how else do you think it went up to 1.356 volts.
You don't have any control over any of your voltages because everything is still on auto, so, as suggested above you may want to learn a little about what your doing.