We may be interpreting the problem incorrectly.  If the scene looks jumpy in driver, it could be that it isn't a video problem.  It might be the track itself.  When I was first doing my layouts, I often didn't get the track smooth.  Short pieces might be at harsh angles, or horrible slopes.  I couldn't see them easily in Surveyor, but when in the cab it was like a rickety roller coaster.
So rather than fiddling with video settings, try working on the track with the straightening tool and gradient checking.