Tried to mine with this miner with 3xVega64 and 1xVega56. The miner hangs with whole OS after few minus running. I don't control the voltage and clocks with the miner. I use OverrideNTool. The hashrate is 1650 for vega64 and 1400 for vega56. The cards were set up with this guide: vega.miningguides.com. Cast XMR miner works with no issues, tested for several hours. 2010/1700 kH/s for vega 64/56 accordingly. With the same power table configs, Claymore Dual Miner mines ETH in single mode, 44/40 mHh/s also for hours with no issues.

So two questions:
1) How to stop this miner to crash with Vega's cards?
2) How to get closer to Cast XMR hashrates with this miner?

Upd:
It hangs with Cast XMR too...