Been using version 4.12 for just over 24 hours mining Grin31 on F2pool. My two 1080Ti's are showing 0.55 / 0.56 gps (+180/+600/200W OC) and my two 1080's are showing 0.35 / 0.36 gps (+100/+500/150W OC) for a total of 1.82 gps. F2pool shows 24hr hashrate of 1.969 gps and 1.3% rejects. I don't have a Killawatt on it right now, so can't report at the wall power.

Update: Killawatt reads 800W +/-10W with platinum psu for this setup.