Speed down on 0.8 MH/s ETH and 10 MH/s on DCR per each VC, with the same others parameters.
Is it normally?
Wow. How did you get 28-29 MH on ETH double mining? I got 3x XFX Radeon RX480 GTR Black and they only hash about 25-25.5 MH/s Eth and about 35-37 MH/s LBR per VC.