Ground object shading cast

[Hyunjin]

Hello,

I have 2 questions about ground shading cast, it would be really appreciated if you make some comments.

As attached, the shading will still reflected on the PV object even by disabling shadow casting.

But as I run simulation and I can see the tree is flying on the panel and ground object doesn't look like not projected.

Also we have different shading losses enabling/disabling shadow cast of ground object.

which one is reality simulation to be reflected?

And if I enable the ground shading cast, it takes huge of time to simulate itself.

even 6 hours took for less than 10% of progress bar, Do you have any idea to make faster?

Best Regards,

Kim