I'm mining Monero atm. And I was trying finding a better voltage for my cards and messing with Afterburner.
Since I couldn't drop bellow 1100 mv in some of my cards I decided to open Radeon configuration.
I went to the core voltage switched to manual and then changed the voltage. But it returned back to normal after some seconds.
I thought I would probably need to change the straps on the bios.
But then I switched the core voltage back to automatic the voltage switched to around 880-930 mV on my afterburner (I have my Afterburner open with -92).
All I had to do was, switch the Voltage to Manual, accept the change and then switch back to Automatic on all of my GPU and my rig dropped from 800 W to 600 W on the wall.
I tested on all my rigs and it worked in all of them without a crash.
I had some GPU that where overheating (74º) and dropped to 59º.
The hashrate stayed normal. I don't know if it can influence I was mining at the same time.
I really don't understand the science behind this and if it will stay after reboot but it works.
Buy me a beer if this helped you somehow 32MfGxYASabgdMQDdwEAeUxQGMxYQAHxzi