Despite criticism on the subject and explanation, I found this extremely enlightening.
It's clear look into my problems as I'm having at the moment (
https://www.truenas.com/community/threads/pushing-smb-large-multi-gigabyte-files-to-the-nas-causes-a-large-transfer-to-slow-and-then-fail.105166/#post-729802) and it's as if a revealed truth were put before me. Even jgreco suggested this post (and we know the Grinch always speaks his mind).
I have EXACTLY the issues that this person dealt with and, with the others who are assisting me in my efforts to get a balanced and under-control server, this article was mentioned more than once.
Looking through it, I have noted more than a few issues with my build that have strangled throughput to a crawl and eventual SMB disconnect. Same with AFP (yeah, I have Macs and tried that approach too while it's still available in TNC 13x.
I'm VERY glad this is out there where blue-sky "research" is still shown to be valuable even when there seems to be no point to it.
Bravo Sir! And thank you.