I got the beta blockchain driver working with one rx 56 vega. If I try to use more then one card the display driver crashes before it starts mining. I've tried on a couple computers. They both use the Asrock 970 extreme 4, windows 10 with the claymore miner. I've tried a fresh install of the drivers using uninstall driver tool. Not sure what issue could be at this point. Any help would be appreciated.