Is there a way to set TrackIR to always launch with a Realtime Priority? When I set TrackIR to realtime, it smooths out panning in the game, so it would be great if it always launched that way.

You can use software like can be read here: https://www.raymond.cc/blog/permanently-set-process-priority-in-windows-task-manager-with-prio/ stay out of Process lasso as it is become an recourse hog.

But you can also modify your TrackIR shortcut, btw I would not use realtime but high. https://www.eightforums.com/threads/cpu-priority-shortcut-for-a-program-create-in-windows.40287/ I know its for Win8 but for win10 or 7 the method is the same. Be awere you have always start TrackIR manually by this custom shortcut.
I use the last method to lower STEAM priority when using VR when playing Assetto Corsa 1937 and BoX, works perfect.

Fxxk I hate that new add banner on this forum, not great for old iPad users.