Dynamic Overhang Setting Not Working Correctly #220

New Issue

MrUnknownDE · 2026-04-05T16:19:08+02:00

MrUnknownDE commented

2026-04-05 16:19:08 +02:00

Originally created by @TheMasterOfTech on 3/21/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2-RC2

Operating System (OS)

macOS

OS Version

26.3.1(a)

Additional system information

RAM: 64GB
Processor: Apple M5 Pro
Computer Model: 14" MacBook Pro

Printer

Bambu Lab P1S

How to reproduce

I've been noticing that at random I will get blemish burnt marks on my outer walls of some prints. I use dynamic overhang speeds and found that if left enabled, it reduces the area in which I see blemishes in the print to 10mm/s and reason I get those blemishes is the extrusion is way too slow. Photo where all extrusions show green is with overhang speed setting disabled. Photo where blue and green is shown on extrusions is with it on. Maybe there is a setting I am overlooking, but I don't believe so. Open to anything to fix it otherwise.

The blue in the preview screen is where it changes to 10mm/s instead of my desired 80mm/s there

Actual results

Please see attached:

Expected results

Don't slow down for outer walls is enabled by default, therefore desired behjavior should be this outer perimter should stay at 80mm/s (my configured outer perimeter speed).

Expected Results for Perimeters

Project file & Debug log uploads

RecentLogs.zip
HoppyEasterProject.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @TheMasterOfTech on 3/21/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2-RC2 ### Operating System (OS) macOS ### OS Version 26.3.1(a) ### Additional system information RAM: 64GB Processor: Apple M5 Pro Computer Model: 14" MacBook Pro ### Printer Bambu Lab P1S ### How to reproduce I've been noticing that at random I will get blemish burnt marks on my outer walls of some prints. I use dynamic overhang speeds and found that if left enabled, it reduces the area in which I see blemishes in the print to 10mm/s and reason I get those blemishes is the extrusion is way too slow. Photo where all extrusions show green is with overhang speed setting disabled. Photo where blue and green is shown on extrusions is with it on. Maybe there is a setting I am overlooking, but I don't believe so. Open to anything to fix it otherwise. The blue in the preview screen is where it changes to 10mm/s instead of my desired 80mm/s there <img width="1512" height="982" alt="Image" src="https://github.com/user-attachments/assets/9b45a09c-c3b9-4b77-90e1-6e607f3ee07f" /> <img width="1512" height="982" alt="Image" src="https://github.com/user-attachments/assets/6e8e1e82-17e7-4cf3-8d38-fd98dca35b8f" /> ### Actual results Please see attached: <img width="1512" height="982" alt="Image" src="https://github.com/user-attachments/assets/6b473342-66ee-4988-bad2-d12685cbfc14" /> ### Expected results Don't slow down for outer walls is enabled by default, therefore desired behjavior should be this outer perimter should stay at 80mm/s (my configured outer perimeter speed). <img width="1512" height="982" alt="Image" src="https://github.com/user-attachments/assets/32ddd4b8-8688-4dca-b8a9-741b1cb701bf" /> **Expected Results for Perimeters** <img width="733" height="598" alt="Image" src="https://github.com/user-attachments/assets/740e53b7-e6ec-425b-8387-8b8a64dc9ff7" /> ### Project file & Debug log uploads [RecentLogs.zip](https://github.com/user-attachments/files/26160486/RecentLogs.zip) [HoppyEasterProject.zip](https://github.com/user-attachments/files/26160467/HoppyEasterProject.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? _No response_

MrUnknownDE added the bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug labels 2026-04-05 16:19:08 +02:00

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Reference: github/OrcaSlicer#220