Sorry to bring the bad news, but dual miner might be over in a few months.
Asic miners on the market are now spiking up the difficulty for LBC/DCR/PASC/SIA
Baikal Giant-B - Blake256R14/Blake256R8/Blake2B/Lbry/Pascal
https://www.baikalminer.com/product10.php
Antminer A3 - SIA
https://shop.bitmain.com/productDetail.htm?pid=00020180116164357365a2ljX8gx06D3
Dual mining maybe gone soon as GPUs cant compete with ASICs, you have have noticed rewards and payouts and difficulty and spike lately, Devs of claymore may need to reduce their fees. to help in a few months.
ETH asic also announced, release in coming weeks.
Do you even know the basics of ethash algorithm? it is so memory-intensive that it would be too hard to design an ASIC with that much memory, let alone a compact size (like the S9).This fact makes eth ASIC-proof.
Try again next time.
it only takes 4gb to mine... PoS is coming late 2018
its coming, start selling ur rigs.
Why? Just switch to another coin...plenty of them out threre.
Ethereum has the overwhelming majority of hashpower pointed at it due to its market dominance. So, everyone will need to switch, lowering profit across the board. It will still be profitable, but reduced a lot, depends also on the coin market. Not necessarily bad enough to sell your rigs, but we shall see.