Someone may find this useful... If your pool reports your hashrate dropping regularly DESPITE bitfury admin showing steady noncerate:
1) ssh into your pi
2) run command:
crontab -e3) add this line at the end of file:
*/10 * * * * sudo /opt/bitfury/start-stratumproxy.sh
4) save & exit
It will restart your stratum proxy every 10 minutes from now on. If you want to cancel it, just run the command again and delete the line.
I am only experiencing this issue with Slush's pool, all others been running fairly stable.