zpool.bat does not refresh after running for awhile
Just started using NemosMiner and it has been great so far.
The only issue I found is those profitability calculations do not update after a while and the algos do not switch. I have a sleep of 300 secs enable and it does work for a couple of hours before no refreshes are done.

![no refresh](https://user-images.githubusercontent.com/35910665/35604659-07d11e3a-05f8-11e8-8084-3bd255dd31b2.png)

Running miner from 19:31:41, Sleep 300s
Had a refresh 19:36:41
Current time 19:51:05, no refresh