Just wanted to leave myself a note here. On QJackCtrl It shows the latency in the bottom right of the Parameters page. If I drop the Frames/Period to 16 (Lowest) the latency drops to 1 msec. For a Jamulus server with a ping time of 22ms I get an overall delay of 44 ms.
And that is over wireless.
This is on my laptop, not my NUC, and it does not have the Scarlet Solo USB Analog-to-Digital converter on it.
But it is encouraging.