CAM: Simulator (new) artifacts showing on complex body due to an edgecase (algorithm lacks complexity for certain usecases)

Problem description

Unsightly display in the CAM simulator

The part is a STEP file created in Solidworks that I was supposed to mill. I've also had problems in the simulation with smaller parts

the problems start by Stock --> USE EXISTING Solid

CAM_2025_02_V01.zip

I've already done a lot of testing including weekly builds and graphics card updates.

Windows 11 with NVidia Quadro P2000 NVIDIA RTX Driver Release 570 R570 U1 (572.16) | Windows 11

Full version info

OS: Windows 11 build 22621
Architecture: x86_64
Version: 1.1.0dev.40041 (Git) Conda
Build type: Release
Branch: main
Hash: 64a4f6e3669279e5dbe9cb59d8e0123eaeb70833
Python 3.11.11, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: German/Switzerland (de_CH)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusion
Logical/physical DPI: 96/93.1131

OS: Windows 11 build 22621
Architecture: x86_64
Version: 1.0.0.39109 (Git) Conda
Build type: Release
Branch: (HEAD detached at 1.0.0)
Hash: 2fcc5317fe3aee96ca73475986a577719fc78e20
Python 3.11.10, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: German/Switzerland (de_CH)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusion

Ev. Can someone check the problem on another PC. File is included as a ZIP

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