EDIT: I should say though, you do save ~10-13% in electricity but i've noticed about a 3-5% drop in hash rate as well.
Not trying to question you or "call you out", but you haven't measured the post LPM power usage at the wall? Please share what the source might be of the 1250 watts and the 3-5% drop in Hash rate claim.
I am slowly converting S9's over to LPM and I've actually noticed a slight increase in "avg Hashrate" over 24 hours and above. I've not had the opportunity to measure power at the wall yet, but if what you say is true, "10-13% power savings and my stable to slightly higher, avg Hash Rate....over 100's of S9's, this is significant.