Thanks.  I was able to edit that batch file and it's working well enough.  I seems to hang and have a few errors when I've tried to execute it though.  Like one time it disabled the cards, but then only re-enabled one of them.  It doesn't happen every time, but I'll keep working at it to see if it's on my end.

I'm still running at full speed now after a whole day of mining.  I have nicehash and a couple nvidia cards on this board, but if I run any of them it kills the speed on castxmr.  It reallys sucks, but it appears you gotta keep your AMD cards on a dedicated board running just one algorithm if you have Vega's.  Every time any other nicehash window pops up I notice the decline.

This is disappointing because I have an ASUS B250 Mining Expert board in the mail right now and sold my Biostar to my friend.  It supports "19" cards so I was hoping to be able to throw all my cards onto this one board.  

How many Vega's have people successfully ran on one machine?  Most builds I see comprise of only 4-6 Vega cards.  

And is there any news on a updated version of the blockchain drivers coming in the future?  I've tried a few of the official releases that supposedly added the compute instructions, but they had really bad hashrates.