I had some claymore 11 crashes, this seems happend on linux only, and when dual coin pool is not reachable/down:

ETH: 02/19/18-20:26:11 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 188.072 Mh/s, Total Shares: 2773, Rejected: 0, Time: 40:40
ETH: GPU0 26.884 Mh/s, GPU1 26.849 Mh/s, GPU2 26.868 Mh/s, GPU3 26.868 Mh/s, GPU
s
 B2S - Total Speed: 0.000 Mh/s, Total Shares: 6915, Rejected: 19
 B2S: GPU0 0.000 Mh/s, GPU1 0.000 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s, GPU4 0
 B2S: Stratum - Cannot connect to s.antminepool.com:9009
 B2S: Stratum - Failed to connect, retry in 7 sec...
Miner thread hangs, need to restart miner!


Also when 2nd coin pool is down, then main mining speed is affected, not that much.

I did some tests with antminepool, 30500MH/s (24 hours of stable mining) , I did receive 145 XVG , whattomine says it should be 162. Seems orphans.