Now that ASIC's are out for DCR, the share difficulty on the pools has gone up to compensate for the huge increase in network difficulty. With 310 MH/s, after power, you would lose money mining DCR. You are much better off dual mining XVG or SMART which are still profitable to dual mine.
Thank you for the info, I'll look into switching my secondary coin. It sucks that I won't be able to access the Decred I've been mining, but it's probably worth it in the long run to switch now.