Config ethminer with MSI R9 390X

Helo guys, whats is the best config for ethminer and MSI R9 390x.
I run 2*Msi GPU on windows 10 and latest driver AMD 15.3 beta.
What can i set to optimize my hashrate ?

Rig ready here : https://drive.google.com/open?id=0B7AEBbqxQNDhTE40REdZVGwySDg