IDK neither because its the same code as V7, only that it uses half the iterations as normalV7.
Everything else is same.
Have you tried what i suggested earlier to use 112/16/2 ?
That actually fixed it for 2 of my rigs. The rest had a couple/few cards improve but still had like 1-2 cards dropping off. I'm contempt with that. Thanks for the suggestion, gave me a nice little hashrate bump!