Just an observation, at dawn/dusk, shadows seem to have an extreme effect on FPS for me in P3D v2.4 - I can rationalize that longer shadows impact more objects at those transition times, hence require a ton more computing power.  Minimizing which objects cast and receive shadows minimizes the issue.  Has anyone else observed this?

 

Thanks,

sg

Dawn and dusk hit fps with shadows on or off - not sure why