I have a suggestion:

When closing the miner and if you are using it to set clocks and vddc it will reset the clocks and vddc to the standards. What happened to me was that doing it with a 6 GPU and 1000W PSU computer simply crashed due to overload. What I do when I need to close the miner is pause the gpus so they go to idle clocks and vddc and only when most of them are idling I close the miner. Would be interesting to add an option so it will pause the gpus then set the clock back or something that would not make the rig overload due to reseting its configuration all at the same time.