I tried dual mining with my Vega FE's but no matter the -dcri the hashrate drop for ETH was too much for my taste and I went back to just ETH mining.
The best performance I got was 32MH/s ETH and ~1000MH/s DCR
With one of my 1080Ti , the best I get for ETH before it start do go down is 37MH/s and 575 MH/s DCR
This is with a tiny OC, max temperature set @69c and using -dcri 45
I will try lbry when the pool pays out.
What pool are you using for Decred ?
What are you OC settings?
What is ETH solo hashspeed?
What is make/model of the card?
Memory +155 MHz (5775MHz)
Core Not OC (1800-1885MHz depending of the temperature, limit set @69c and fan (auto) always around 50%)
ETH: Same speed solo or dual if I dont push it (-dcri) over 45-50
This one is a Gigabyte Aorus
I can add 700MHz to the memory speed on my GTX-1080 but only 190MHz on this 1080Ti, so I keep it @ 155MHz just in case.