Oh heads up, if you have the regular ASUS ROG STRIX GTX 1080TI, you are right, the Mem OC having it at 0 is the best, the other settings did no difference. I can't get more than 45MHs
However, using the ASUS ROG STRIX GTX 1080TI OC, using the +450 mem OC, it brings it up to 49MHs.
You using afterburner to set the +450 mem boost? With no OC whatsoever I get the 45 Mh/s, any OC including just the memory clock does not seem to have a positive effect. Also using the same card as you.