This is one great and fun sim!

A small thing (and I guess it wouldn't be too hard to fix) that I've noticed is that HELI-X still uses a lot of cpu while paused. The fps counter maxing out tells me the graphics are still rendered although simulation is suspended.
Anyway, it would be nice if the app used none or at least very little cpu when paused, so that I didn't have to shut it down when switching to other apps.
