I'm using the same settings on stratum and front end like suprnova , did the cgminer crashes just when you mine on my pool ? or is happens on other pools to ?
It crashes when I tests all 3 pools and switches between them. I can`t say where it crashes. But hashrate is lower with the same settings.
Edit: It seems that ShareDiff is fixed at 0.001. Is it ok? I see 10-20 accepts every 2 seconds in my miner.