I have a node that issues many micro-transactions. Even with txfee=0.00005 it has been very unreliable to get transactions to propagate. Sometime they do, sometimes they don't. This has only been a problem starting 10/13 around the time when v0.11.1 came out with the new mempool protection. There was never a problem getting transactions to propagate with txfee=0.00001 before this. Is there something else going on here that I need to take into consideration? I can live with a 5x increase in fees, but if transactions don't propagate reliably it limits the use of bitcoin significantly.