Well that's new! Have you done any tests with lower voltages? That could really help people out if the efficiency can be improved.
I haven't tbh, but when I upped the voltage from 0.81 to 0.85 I noticed a significant drop in the errors count on all 4 machines. Also there are quite a bit options offering different voltages all the way down to 0.5v. The max is 0.9v
Can you explain how you got the screen that allows you to change the voltage please ?