I play the demo version. In the UFO tab, "Lock speed" (default keybind: End) seems to have no effect. Nothing happens when I press it. My speed still changes when I fly higher. I would love for it to stay locked for a more realistic sense of speed and scale.
I am also wondering if it's possible to change the speedometer in the HUD from m/s to km/h.
Thanks for an awesome demo/engine!