I was mining for about four or five hours yesterday but, judging by the CPU activity in the system task manager, mning stopped… The task manager also showed that I had consistent internet access and I was actively using zcash-cli without interruption…
I had mine stop on me a few times, it turned out to be annoying windows update kicked on at 3am and bogged down the whole computer. That was a VM, since I switched to dual boot I haven’t had any problems.
Strictly Linux only here… 
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