Don't draw the first part of planned trajectory

[DarthPointer]

Building a manuever some (10+) orbits after plan start seriously drops FPS down. I guess predicted flightpath is not recalculated every frame if it is not changed so I accuse trajectory drawing of causing 1 FPS if I plan a manuever with 10 days of waiting at low orbit. I'd like to have a slider to hide first hours/days from the screen to decrease number of segments drawn on the screen.