Have 6xvega 64s, running at ~58-59MH/s each while pulling ~1470w from the wall while overclocked/undervolted. Still dialing in optimal settings. Using the newest version of the miner with intensity 23 and including the --asm command in my batch.
The miner will occasionally stall when trying to adjust difficulty, and just go idle......so I use HWinfo Alerts to run a script that restarts the miner if it detects my gpu temps fall for a minute.
Anyone also running these cards? What settings do you use?