Tree support generation freezes and crashes on donut shapes

[Reimajo]

Bambu Studio Version

1.8.4.51

Where is the application from?

Bambu Lab Official website

OS version

Windows 10 Pro 64-bit (10.0, Build 19045)

Additional system information

Card name: NVIDIA GeForce RTX 3090 Processor: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz (12 CPUs), ~3.7GHz Memory: 32768MB RAM

Printer

X1C

How to reproduce

1. Open project (DonutShape.3mf)
2. Change the support type to "Tree (auto)"
3. Start slicing

Actual results

App freezes around 75% and doesn't continue slicing

Expected results

Slicing finishes without problems

Project file & Debug log uploads

TreeSuportBug.zip

Checklist of files to include

• [ ] Log file
• [X] Project file

[Reimajo]

Someone reported this issue in July 2023 here but no bug report has been posted on GitHub by them. They also had the issue with donut-shaped objects, so I believe this could be related. I ran into the same issue, found the forum thread and decided to post my own project file with the same issue here.

[tangketan]

Sorry but I can't reproduce the bug. Beside, freezing at 75% means it's "Optimizing toolpaths", so nothing to do with tree support.

[XunZhangBambu]

@Reimajo In 1.9 beta, slicing this model with tree support does not cause freezing

[BambulabRobot]

This issue has been marked as inactive due to no response for 90 days.