Wow great job!  I don't know how you did it but my RX 470s now get 725 h/s which is 200 h/s more than any other miner I've used including Claymore, XMR-STAK and Cast.  Previously the best hashrates I got were with sgminer-gm 5.5.5 which I've been using since last June.

How's 1.3 coming?  I was going to compile it to see if could squeeze a little more out of my R9 390xs.  I get upwards of 950 h/s overclocked and 850 h/s stock.  Haven't had much luck with any bios modding so running stock timings for max stability.

Cheers