Ok, I have to defend Tobii4C a bit.
First: the default settings are no good.
Second: you have to keep in mind that a TrackIR user is used to look right, but move the eyes left to focus what he wants to see.
Third: I have used TrackIR extensively flying WW2 sims and I still use it when I do so.
Fourth: you have to set up keys to center and to disable both devices depending on what you are doing.
When I enter the station services I always disable any headtracking or Eyetracking. Otherwise reading menues gets wonky.
My settings on the Tobii4C are low responsive to the eyes with low speed to compensate my habit of flicking between spots on the screen with my eyes.
On the other hand my headtracking is set very responsive and fast to be able to quickly look at something on the edge of my field of view. But I have a deadzone in the center to calm the image when I am in normal flight.
For everyone who is interested, I uploaded an image with my settings:
I suggest you to try that out. Because looking at something on your screen gets very natural with these settings. Just look at it and it will become center (ish) depending if its within the eye dominated center or the head-dominated periphere. For it is very relaxing.
I hope at least one user can benefit from that. Fly safe commanders.
o7
EDIT:
very important sidenote: I open my sidepanels, the target panel and the role panel with keys (coolie hat). Doing so stops all headmovement when opening a panel and allows you to have a steady view on them.