I have a rig with 8 x RX 580 and one RX 5700. I am able to start it OK and after a while (10-15 min) it stops mining. The settings are below. I am also noticing that when it stops mining I have very high load average (10+). I have also been running this rig with fewer GPUs (4 x RX 580 and one RX 5700) and it seems to work fine. Any ideas would be appreciated.