So, I'm trying to pinpoint an issue with STAK-AMD.

On my test rig with 4 vega 56, it will lock up hard after 10 to 60 minutes in the mining.

One of the cards will do 0 hash. The miner is locked up. Stopping it hangs windows with a driver error.

Rising the HBM and GPU voltage from 905 to 930 will stabilize the card, but then something else happens: All cards stop mining after some time (again, 10 to 60 minutes).

At that point it's possible to stop the miner, restart the cards and go for a little while until the same happens.

If I take out the "problematic card", laving only 3 of the others, the same happens: all cards stop mining.

Now the catch: I get cast-xmr and it's been mining for hours with no issues. I can also mine at about 7850 h/s on 4 vega, at 700 W from the wall.

Using the blockchain drivers from Aug.23.
Registry undervolting. 905-905 gpu/hbm and 1408/1100 freq on gpu/hbm.

Reducing the memory speeds does nothing. Stak will hang again.

Now, anyone has stak-amd running well on similar hashrates or are you all using some other miner ?