S1-1 - 218 - 5hr - 437gh - 1HR Restarts
S1-2 - 250Mhz - 5hr - 466gh - 1/2hr restarts.
This is an increase of over 40GH on both miners for me!
I'm going to clock-up S1-1 and see if I see increases at 1/2hr intervals.
I encourage those experiencing degrading performance over time to do something similar. You lose less than 10 seconds of mining per restart.
I have same problem with one of my antminers, that randomly it will start under performing, like for example when I first turn it on it will hash fine for random amount of hours averaging 440 GH/s, but then will go to 400-410 GH/s AVG for days unless I will reboot it, sometimes needs couple of reboots.
M's Ant Monitor can reboot Ants when they drop below a certain hashrate as well. See my sig.