I am also looking or a solution for my Palit GTX1060 card which has Hynix memory too.
Instead, I let it mine with zcash as it can reach 320 sol/s EWBF zcash miner.
I can only manage to get 19.x MHs if overclocked at +490 - +500.
I got x6 1060 6GB Palit recently. All with samsung memory.
x4 cards with 86.06.45.00.23 vbios version and
x2 cards with 86.06.39.00.12 vbios version.
86.06.39.00.12 shows 20 MH/s in stock, but
86.06.45.00.23 only 15 MH/s in stock.
Im going to flash all cards to 86.06.39.00.12