I already adjusted the memory, I do not have a card that clocks its memory well.
There is no way I am going to undervolt. Yes, reducing the voltage does reduce the noise in the line and allow more consistent power delivery. But it also pushes the amperage up and out of spec, and it is the amps that kill electronics.
If I keep this card in spec it will last well nigh forever. When I am done with this card I will pass it on to someone else, and it needs to be undamaged.
If you are running at a constant power level with something like a DC/DC convertor, if you reduce the input voltage you will see input current go up because the power has to remain constant. That's not what's happening here though. If you are running at 2GHz and 1V and reduce the voltage, the power used actually decreases and you don't see an increase in current. You actually see the opposite effect, with less voltage applied to the transistors you get less drive current and your current will also go down.
As an example, if I fire up Monero mining on my 5900X, at 3.7GHz all core and a 1.2V peak core voltage setpoint in Ryzen Master, I get 1.138V core voltage, 64.2A core current, and 145.4W package power. If I lower peak core voltage to 1.1, I get 1.044V core voltage, 56.9A core current, and 124W package power. Undervolting gives not only lower power and temperatures at the same frequency, but also lower current.
The downside is that higher voltage increases drive current, which allows transistors to transition between 0 and 1 more quickly. If you lower voltage too much you get to the point where stability at that frequency becomes a problem. Ideally though, you want minimum voltage for whatever frequency you're running as long as it is stable.