Hello, sir. While writing a real-time path tracing engine, I came up with the following idea: Instead of re-calculating reflections every frame, reuse the last frame’s reflections but adjust them based on how far the camera moved. And adding motion blur to reflections can make this effect seamless.
That's called ray-tracing, BeamNG does not support ray-tracing. So it uses dynamic reflections which have to recalculate the render everytime the camera moves. If you find this annoying, increase the refresh rate of dynamic reflections (you must have a good CPU to do this).