You should be able to reset the fan speed by either the "Restore Stock Settings" button or the "Reset All" button, then. As for power consumption, I forgot to mention that I will update the optimizer so that it would maximize profitability, taking into the cost of electricity into account.
@Zawawa:
Take your time, as the toy we have an hand now is fun to play with. A bit tricky at times - but when handeled carefully the results are more than nice ! Congrats !
Testing right now with two nice pieces of sillicon (Quality 81.6% and 77.5%) and so far my own timings seem to work - just needs a tad more to stability

as i get from time to time a ADL_Overdrive5_PowerControl_Set() failed for Device #1 (thats a 580 8G) ... but well .. Results so far are ok ... got both past 1050h/s on CN Heavy.
https://imgur.com/a/3fdcQHFCan you share your timings and settings for reaching that excellent result for 580 8G hynix memory?