I just found out about this this morning. Tried it, got awesome results as well as a stable rig. Kept on running the whole day and only stopped when I overclocked it during the demonstration in the video. Hope you were able to find this useful!
Quick specs on my rig
GPU0 - Zotac GTX 1080 ti Amp Edition
GPU1 - Zotac GTX 1080 ti Amp Edition
GPU2 - Asus Strix 1070
GPU3 - Zotac GTX 1080 ti Amp Edition
GPU4 - Zotac GTX 1080 ti Amp Edition
GPU5 - Zotac GTX 1080 ti Amp Edition
Running on an Asrock B250 Gami
آی-ویدئو