Just a word of warning,
I updated my 1080ti from nvidia driver 398.36 to the latest one 416.16 and my hashrate on phi2 dropped from 10.5mh down to 6.0mh.

Uninstalled 416.16 with DDU and reinstalled 398.36 problem solved
Also Top job on making Cryptodredge well worth the dev fee.
On 0.92 My phi2 hashrate is double what it was using Zenemy 1.20
I tip my hat to you good sir (or madam ??)