Unable to get geometry of circular stairs

[ct.rhino (Charlie T)]

When attempting to get geometry out of curved/circular stairs, Grasshopper / Rhino freezes every time and becomes unresponsive. I am not able to internalize but am sharing a RVT of just the stair.

I am wondering if it has something to do with the strange helical lines.

When getting geometry of linear stairs there is no issue:

link to RVT: Dropbox

Thanks for any help.

[Japhy]

Thanks, i’m seeing this as well.

[Japhy]

Note that the Mesh Preview and Wires are available.

[ct.rhino (Charlie T)]

Great thank you.