So I am meesing arround with settings...

7x vega 56 reference cards rig. 1408/875 1100/875

16+16 just hangs at launch
16+15 starts to work, but restarts rig after few minutes
16+14 works, but restarts rig after 30 mins or so. which never happend with other miners.14.3khs 1250w from wall
14+14 gives a little lower hashrate, but seems to be stable, also zero lost shares. 14.1khs  1250w from wall