OK. I tried your new binary and it appears the same. I assume because I'm using the pseudo difficulty as you stated. BTW, I am using "--queue 0 --scan-time 1 --expiry 1", which is the typical recommended settings for p2pool.
Give it time too since the original does not submit stales. Scan time and expiry are irrelevant and recommendations for this stem from the dark ages of getwork mining, not stratum. The difference between queue 1 and zero at thousands of work items per second is nothing but it may slow the device down.