I had black screens before I manually adjusted the fan speed. Now I can go to 100% and nothing happens, but as soon as everything runs automatically I lose the picture and the fans spin up even though the graphics processor stays cool. MSI Afterburner didn't help either.

Unfortunately, MSI Afterburner doesn't do much more than the Nvidia app, although Nvidia App does have errors. I don't want to overclock, I just want to keep power consumption low.
In a certain sense, this should work with any mining system during initialization. Let's say I reduce power consumption by 50% and use only 10,000 watts instead of 20,000 watts, and reduce mining efficiency by a maximum of 10%. Then I'll still have a gain of 40%.
But the interesting thing is that I think that if you can reduce the initialization to 10%, the Cuda cores will still work at 100% because they only need a fraction of a nanosecond to react, and they will still offer over 90% efficiency.
Which roughly means that if you increase the frequency of the power supply itself, you could expand it even further.