now i am with two r9 390 and catalyst software 15.7.1. i use nicehash miner v.1.3.0.1 and my hashrate is 14Mh per gpu. i dont use mod bins from wolf0.
should i change driver to 14 ?

with nicehash miner 1.3 ver my r9 390 8gb has 12Mhash/s on x11 algo. when i power r9 390 with r9 285 2gb tonga gpu at the same time with miner the hashrate of 390 reduce to 7 Mhash/s and the tonga is 2.5Mhas/s.
i tried bin from wolf0 for tonga and hawaii with no effects. does anyone know about this ?

Now i am with R9 390 8GB Nitro. I use wolf0 hawaii 64 worksize bin and your config for 390X and my hashrate is 7-8Mh for X11. What is wrong!! I use sgminer 5.3.0 - fixed