NomadSculpt crash on extracting mask on 1M+ polygons

Bug Report
1

THE PLATFORM: MacBook Pro M4, MacOs v26.4.1
NOMAD APP VERSION: 2.9.8

Hello,

I have an issue when trying to extract a mask on a part with 1M+ polygons — the app freezes and I have to force-quit the process. Under normal use, Nomad takes up 1.2% of the CPU. As soon as I try to extract a mask, the CPU spikes to around 718%.

Capture d’écran 2026-05-15 à 10.39.35

I don’t have this problem on parts with a lower polygon count. It seems like it’s mostly the extraction preview that causes the program to crash.

Do you have the same issue? Is this a known bug?

2

I’ll update to 2.9.9 soon, you can then try again to see if the issue persists.