Honestly, all the more reason to just run FreeBSD then. Surprisingly simple and still more robust with ZFS (even if Linux has come a long way in the last 10 years).

Incidentally I actually found Truenas to be a solid upgrade from my old vanilla FreeBSD install; the tuned performance defaults made things a lot better for me after I recovered my volume (the USB stick I was using for the OS died).

So, its sad to recommend something else, or obviating it entirely.