I updated and after a few hours the miner had crashed or the card (vega 56) reset as it was mining about 30% less. Used same settings where it mined perfectly at 41 mh/s for good watts. Just reporting back in case it happens for too many users and a fix is eeked out. On 19.9.3 drivers and this is not an aggressive profile.
OK so it wasnt a one off and happened again about 3 hours in. Is there an auto ramp feature thats tweaking it and pushing it too far causing the miner to crash? After the crash it drops from 41 to 35 Mh/s and uses more power.
Will switch over to see if it happens on another miner.