I thought I had this fixed but grass splines quickly disappear when viewed a short distance from the viewpoint(compass). I had made a config change in the ones I used but can't remember it. Both JVC and FMA splines have the problem.
TS2012, view distance 3500, all other sliders max, spline editing detail checked
TS2012, view distance 3500, all other sliders max, spline editing detail checked