OK. I've enabled per your suggestion and confirmed the flag was enabled, but it appears for that particular queue (NNTP traffic) running at 28 MB/s while downloading the drop count still appears rather steady. Should I be expecting 10s of drops typically or 100s, even 1000s? The drop count appears especially evident on my system with NNTP high speed downloads. If it's helpful, attached are my current settings on a 28/4 Mbit connection (below). The queue where I'm noticing the most drops is:

queue qNNTP on em2 bandwidth 1% qlimit 500 hfsc ( red , ecn )

WAN:

altq on em3 hfsc bandwidth 3880Kb queue { qACK, qDefault, qP2P, qBackup, qDNS, qNNTP, qSSH, qVoIP }

queue qACK on em3 bandwidth 30% qlimit 500 hfsc ( ecn , realtime 20% )

queue qDefault on em3 bandwidth 20% qlimit 1000 hfsc ( ecn , default , realtime 20% )

queue qP2P on em3 bandwidth 1% qlimit 500 hfsc ( ecn , upperlimit 95% )

queue qBackup on em3 bandwidth 5% qlimit 500 hfsc ( red , ecn )

queue qDNS on em3 bandwidth 5% qlimit 500 hfsc ( ecn , realtime 5% )

queue qNNTP on em3 bandwidth 1% qlimit 500 hfsc ( red , ecn )

queue qSSH on em3 bandwidth 5% qlimit 500 hfsc ( ecn )

queue qVoIP on em3 bandwidth 5% qlimit 500 hfsc ( ecn )

LAN:

altq on em2 hfsc bandwidth 1Gb queue { qLink, qInternet }

queue qLink on em2 bandwidth 20% qlimit 500 hfsc ( ecn , default )

queue qInternet on em2 bandwidth 28000Kb qlimit 500 hfsc ( ecn , linkshare 28000Kb , upperlimit 28000Kb ) { qACK, qP2P, qDefault, qBackup, qDNS, qNNTP, qSSH, qVoIP }

queue qACK on em2 bandwidth 30% qlimit 500 hfsc ( ecn , realtime 20% )

queue qP2P on em2 bandwidth 1% qlimit 500 hfsc ( ecn , upperlimit 95% )

queue qDefault on em2 bandwidth 20% qlimit 1000 hfsc ( ecn , realtime 20% )

queue qBackup on em2 bandwidth 5% qlimit 500 hfsc ( red , ecn )

queue qDNS on em2 bandwidth 5% qlimit 500 hfsc ( ecn , realtime 5% )

queue qNNTP on em2 bandwidth 1% qlimit 500 hfsc ( red , ecn )

queue qSSH on em2 bandwidth 5% qlimit 500 hfsc ( ecn )

queue qVoIP on em2 bandwidth 5% qlimit 500 hfsc ( ecn )