Rhino 8. Rendered mode floor Z not updating with GH preview

Hi all.
Rhino 7.38.24338.17001, 2024-12-03

Rhino 8.24.25251.22001, 2025-09-08

Hope this will be fixed…

In the meantime, do somebody know a quick fix or a hack to move the floor z?
I know I can move geometries up, but those are heavy and I’d prefer to avoid that…

Hi Ric, have you tried in the Ground Plane panel to set a lower height (usually the “auto” mode is checked).

This parameter usually affects the height in the rendered mode and I hope is the same for gh.

Didn’t know the existance of that panel. Interesting, thanks.
Then, now, how to set its Z position from c#?