"Slow down for curled perimeters" create artifacts on Creality printers and it's wrongly turned ON by default. #1660

New Issue

MrUnknownDE · 2026-04-05T18:57:50+02:00

MrUnknownDE commented

2026-04-05 18:57:50 +02:00

Originally created by @Wdits on 11/10/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

No response

Printer

Creality / Hi / K1 / K2

How to reproduce

Download the latest version of OrcaSlicer
Select your Creality printer, you will get a default profile
These default profiles come with this "Slow down for curled perimeters" option turned ON
Print a benchy and check the hull for artifacts (this is the easiest way to reproduce this issue, I've had other issues on different objects too).

Actual results

The benchy hull and other printed objects with very curvy perimeters will have this strange artifact, I've made sure to tune my PA the most i could, but the issue it's still there.

K1 - Orca's Default 0.20mm - Option enabled by default

Hi (Bedslinger) - Orca's Default 0.20mm - Option enabled by default

Expected results

The benchy hull and other curled perimeters should not look this bad, this is an actual picture of a benchy printed right after disabling "Slow down for curled perimeters" on a K1

Project file & Debug log uploads

benchytesthi.zip

Checklist of files to include

Log file
Project file

Anything else?

I’ve been trying many solutions and even thought my printer was faulty. I adjusted the belts and several other things, but then I realized that the original default Creality Print profiles have this option unchecked. Honestly, I don’t see any benefit to having it enabled. I still keep it on just in case, but it seems to do more harm than good? at least on fast Creality printers. Please correct me if I’m wrong here. Are there any scenarios where this option would actually be beneficial? the curlings happen anyway.

Many people would think that this is a calibration issue, but i made sure to calibrate everything, test this on different creality printers (K1 and Hi), ask some friends, they're all having the same artifact, and it's not a coincidence that Creality itself recommends this option to be OFF on their default profiles.

I’m not the only one having this issue either, there are plenty of Reddit users reporting the same problem and fixing it by disabling this option. So I’m really wondering, is this feature meant for printers with poor cooling, is it just a bug, or are Creality/other printers simply incompatible with it? whatever is the case, this definitely needs clarification.

*Originally created by @Wdits on 11/10/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information _No response_ ### Printer Creality / Hi / K1 / K2 ### How to reproduce 1. Download the latest version of OrcaSlicer 2. Select your Creality printer, you will get a default profile 3. These default profiles come with this "Slow down for curled perimeters" option turned ON 4. Print a benchy and check the hull for artifacts (this is the easiest way to reproduce this issue, I've had other issues on different objects too). ### Actual results The benchy hull and other printed objects with very curvy perimeters will have this strange artifact, I've made sure to tune my PA the most i could, but the issue it's still there. K1 - Orca's Default 0.20mm - Option enabled by default <img width="334" height="439" alt="Image" src="https://github.com/user-attachments/assets/d3ce4907-0610-4461-b283-6220eb639a39" /> Hi (Bedslinger) - Orca's Default 0.20mm - Option enabled by default <img width="276" height="342" alt="Image" src="https://github.com/user-attachments/assets/b4bd7c34-43ed-489d-aa0a-fe38253084f8" /> ### Expected results The benchy hull and other curled perimeters should not look this bad, this is an actual picture of a benchy printed right after disabling "Slow down for curled perimeters" on a K1 <img width="626" height="739" alt="Image" src="https://github.com/user-attachments/assets/b4240a88-5455-4555-9bfb-30b7b654cd0e" /> ### Project file & Debug log uploads [benchytesthi.zip](https://github.com/user-attachments/files/23459924/benchytesthi.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? I’ve been trying many solutions and even thought my printer was faulty. I adjusted the belts and several other things, but then I realized that the original default Creality Print profiles have this option unchecked. Honestly, I don’t see any benefit to having it enabled. I still keep it on just in case, but it seems to do more harm than good? at least on fast Creality printers. Please correct me if I’m wrong here. Are there any scenarios where this option would actually be beneficial? the curlings happen anyway. Many people would think that this is a calibration issue, but i made sure to calibrate everything, test this on different creality printers (K1 and Hi), ask some friends, they're all having the same artifact, and it's not a coincidence that Creality itself recommends this option to be OFF on their default profiles. I’m not the only one having this issue either, there are plenty of Reddit users reporting the same problem and fixing it by disabling this option. So I’m really wondering, is this feature meant for printers with poor cooling, is it just a bug, or are Creality/other printers simply incompatible with it? whatever is the case, this definitely needs clarification.

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Reference: github/OrcaSlicer#1660