Re: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v10.0 (Windows/Linux)

when i mine only ETC i get 26mh/s single rx 470

if dual mine etc+dcr only 20 for ETC and 600 in DCR

is that normal

Yes, it is totaly normal with dual mining on AMG GPUs.
Only nVidia GPUs have the same hashrate with simple and dual mining.