I've noticed an issue where at least 1 of my RX5700 will crash after switching to ETC when mining on Nicehash. The crash happens after a few minutes (less than 10) and they will crash even if it's only a brief switch to ETC then back to ETH. Mining to a regular ETC pool does not have any issues. I've tried every config setting/flag I can think of to try to prevent it (-eres 0 -rvram -1 -lidag 0 through 3), and both drivers 19.9.1 and 19.9.2. This is using version 4.6c. Any other setting I should try?
So I had this happen again while just mining ETH to a regular ETH pool. Everything was fine, stable and had been running for over 28 hours. Then, a DAG switch occurred (updating to the next ETH DAG) and between 9 and 10 minutes later, one of the GPUs (RX 5700 XT) stopped working and the miner would have restarted, but I had -rmode 0 to see if/when it would crash. Any thoughts on this?