HiveOS dual mining for ETH and RVN with all AMD cards

Hi, is anyone using hiveOS for dual coin mining for AMD card? (ETH + RVN). What algorithms are you using? Since I cannot use 2 team red miner I am using team red miner for ETH and nbminer for RVN.

Compared to team red miner the nbminer seems to take a much longer time to build up hashrate and I am not even sure whether it will keep going up since in team red miner my 570/480 4G cards are doing 12.5-13.5MH. but with NBminer it begines with 8MH for the first 30 minutes, and then slowly rise up. Did anyone have any suggestions on this?