My MH/s increased 6,5% with the new RX OS dagfix.
Im using 6 rx470 4gb eloisa memory (mining edition model 11256-21-21g) and get 28,3Mh/s per card (total rig 170mh/s)
I Dualmine ETH and DCR with claymore 10, I really like SMOS, however I still on windows due to the power consumption (1300w on SMOS x 1050w on windows).
I Hope @titanic will be able to fix this soon!