pcblk efficiency decreases over time

[cjdelisle]

In order to mine with maximum efficiency, you need to have the best announcement set in memory at the time of mining. The definition of the best announcement set is the set for which count * minimum_degraded_effort is the highest. Over time, the amount of degraded_effort (the value) of an announcement, so if the rate at which announcements are being made decreases, the block miner should recall announcements which were previously discarded as "not part of the best announcement set". Currently this is not happening.

An appropriate workaround is to simply restart the block miner every few minutes.