antminer u1 losing hash after internet dropout?

[MarshallSambell]

Hi
I'm quite new to mining and have been using 3 antminer u1's for about a month now but I seem to be losing hashrate every time I get an internet dropout.

my isp is fine and it will stay on if i leave it on but I live with my family and they sometimes turn it off at night.

When I restart the bfg miner program it goes back to 4.75 gigahash but when the internet drops out and goes back on it goes to like 3.9 gigahash

does anyone know how to fix this problem?