-Update-
So after a day or so, I have to admit it's a bit faster than 1.20. For version 1.20, Consistently I've been getting maybe 11-13 mh/s on the 1070s upwards to about 15 mh/s on the 1070ti.
With ver1.22 I'm getting 13-15 mh/s on the 1070s and upwards up to 15-20 mh/s on the 1070ti and these are all undervoltage to about 67%.
Total hash output is 58-84 mh/s on version 1.20 and total hash output on 1.22 is anywhere from 64-110 mh/s. Of course with x16r it's very unpredictable but I haven't had any crashes yet on Mint 19 with nvidia 390.48 drivers + Cuda 9.1 and I'm pretty happy with the results, thanks Dk & Zealot/Enemy good stuff!
What is your TDP?