Max volumetric speed test - consistency #764

New Issue

MrUnknownDE · 2026-04-05T16:29:18+02:00

MrUnknownDE commented

2026-04-05 16:29:18 +02:00

Originally created by @Bauschlumpf on 2/14/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2 beta Build cd5c8f2a

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

CPU: Intel Core i9 8950HK
Memory: 64GB DDR 4
Graphiccard: Intel UHD Grphics 630 and NVidia Quadro P3200 with Q-Max Design

Printer

Prusa Core One L HF 0.4

How to reproduce

New Start of Orcaslicer
Choose Prepare
Select: Prusa CORE One L HF 0.4 nozzle
Select: 0.20mm SPEED @CORE One L HF 0.4
Choose Calibration -> Max flowrate
Take standard settings: 5 / 20 / 0.5 or 5 / 30 / 0.5 for a better view
Slice plate
Change view to actual speed

Actual results

The printing speed does not appear to be consistent in the test. This is already visible in the actual speed display at the default settings of 5 to 20 mm³/s of a freshly started Ocalsclicer. When the maximum flow rate is increased, e.g., from 20 to 30, the effect becomes more pronounced.

I fear that this inconsistency also affects the G-code.

Expected results

Consistent display and consistent G-code for the test.

Project file & Debug log uploads

Max volumetric speed test.zip
I don't use this.

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @Bauschlumpf on 2/14/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2 beta Build cd5c8f2a ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information CPU: Intel Core i9 8950HK Memory: 64GB DDR 4 Graphiccard: Intel UHD Grphics 630 and NVidia Quadro P3200 with Q-Max Design ### Printer Prusa Core One L HF 0.4 ### How to reproduce 1. New Start of Orcaslicer 2. Choose Prepare 3. Select: Prusa CORE One L HF 0.4 nozzle 4. Select: 0.20mm SPEED @CORE One L HF 0.4 5. Choose Calibration -> Max flowrate 6. Take standard settings: 5 / 20 / 0.5 or 5 / 30 / 0.5 for a better view 7. Slice plate 8. Change view to actual speed ### Actual results The printing speed does not appear to be consistent in the test. This is already visible in the actual speed display at the default settings of 5 to 20 mm³/s of a freshly started Ocalsclicer. When the maximum flow rate is increased, e.g., from 20 to 30, the effect becomes more pronounced. I fear that this inconsistency also affects the G-code. <img width="1438" height="745" alt="Image" src="https://github.com/user-attachments/assets/8931a35b-7458-4f66-9dbc-e37ecb85d368" /> ### Expected results Consistent display and consistent G-code for the test. ### Project file & Debug log uploads [Max volumetric speed test.zip](https://github.com/user-attachments/files/25318131/Max.volumetric.speed.test.zip) I don't use this. ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#764