unfortunately, i'm not running it, i was waiting for the pps reward, as i've been mining there from time to time (with a low hashrate though).
[moving from proportional to pps right now, by the way. It wasn't available when i left, thanks to you, it is now
]
With my low hashrate, i also ran into that problem a few times, probably when multiple blocks are found within a few seconds (at least with such a low hashrate as mine).
So if i understand, you'd submit shares against a higher difficulty, to submit less shares, but what about the reward ? let's say you submit shares against a difficulty = 16 ... is one of those shares worth 16 diff=1 shares ? (i guess it would look like that, or something
)
I don't know if it's ready yet (there's a big thread discussing it under the miner forum, haven't read it entirely yet), but wouldn't stratum help ?