Hi Claymore,
Have observed the phenomenon happening twice, once after upgrading to v11.3 and the second which is today, 4 days after upgrading to v11.4. I am only mining Ethereum.
The problem is, the Ethermine Dashboard shows miner goes down to 0Mh/s. It show miner has no activity for about 6 hours and then it start to come alive again by itself.
I was not there when the Dashboard displayed miner hashrate activity goes down to 0Mh/s. I also do not have any script file to restart miner if there is a failover or computer reset.
Windows 10 update is disabled. When I came back, I check the logfile for activities on the miner. The logfile does show that miner is alive, receiving new jobs from ethermine pool and mining. Good shares is increasing by the minutes. Another thing I am not sure now is whether the good shares mined are stolen, lost or have they been credited back to my ethereum wallet.
I have tried to post the Dashboard graph here but I cannot and don't know how.
Please check if it is a software bug cos it never happens on the older version before v11.3. My miner are very stable and do not crash. The only time I stop mining is to upgrade AMD drivers or Claymore software.
Hope to hear your reply.