On NiceHashMinerLegacy, my VEGA only get 1.2kH/s on CryptoNight (sgminer and Claymore Cryptonote 10.2), even after tweaking in Wattman. Also, my PC crash and reboot a lot since I have the VEGA, never did before when I had my NVIDIA GTX1060.  I use the Beta Blockchain driver.  

With Nicehash, it seems to always choose DaggerLbry (give 0.4495 mBTC/day) while the 2 CryptoNight (if forced) only gives 0.33 to 0.39 mBTC/day).

I suppose that choosing the best Monero Pool + using XMR-Stack-AMD will give a better payout than that ??

With the WattMan tweaks (-30, 900Memomy, -25%, fan at 3500RPM), I get 310W at the wall mining with a single Vega64 + a Ryzen 1700 oc to 3.65Ghz.  The Idle = 90-95W.  If I do not mine with the Ryzen, it drops to 270W at the wall mining only with the Vega64.  

This thing is pretty unstable, I hope that it will get better stability eventually.

Questions for the pros :

1. Where do you guys get the XMR-Stack-AMD compiled ?  There seem to be lots of forks, which one is the best?
2. What is the best Monero Pool ?
3. What is the Wallet you use for Monero ?  Is mining into an Exchange address is OK?
4. I want to monetize the mining until the ROI is attained, so I Plan to sell the coins weekly/monthly, is this good strategy?

Thanks !