Dragging Window around screen is very slow/lagged #1995

New Issue

MrUnknownDE · 2026-04-05T22:16:02+02:00

MrUnknownDE commented

2026-04-05 22:16:02 +02:00

Originally created by @jigglysackles on 10/5/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.0 build 70931e5

Operating System (OS)

Windows

OS Version

Win10x64 v22H2 (build - 19045.4651)

Additional system information

CPU: Ryzen 3900X
RAM: 32GB - DDR4-3200
GPU: Radeon 6700XT
Gen4 NVME SSD

Printer

Bambu X1 Carbon, Voxel Lab Aquila X2

How to reproduce

Start Orcaslicer
Drag the Orca window by the title bar at the very top
(projects being loaded or not doesn't seem to matter)
witness slow drag

fix?
drop polling rate of mouse to 125Hz (from 1000Hz)
drag window
mostly normal drag behavior but still a little jumpy

Actual results

The window drags along the path the mouse takes but does so at a delayed rate and pace. It moves smoothly along the past until coming to the point where I let go of the mouse. While it's moving after I have let go of the button, my mouse is free to move again, but the window continues to move and there is still the image of my mouse cursor dragging it.

I've read that this can be related to mouse polling rate and changing the polling rate does seem to help, but dragging the window still has some jitter even dropping the poll rate to 125Hz.

Expected results

The window should drag smoothly along the path of the mouse, in time with the location of the mouse.

Project file & Debug log uploads

Since this happens regardless of project or no project, and since there is no crash or apparent error, there isn't really a need for log files but I've attached them regardless.
log.zip

Checklist of files to include

Log file
Project file

Anything else?

Video of issue. In the moments where it's drug across the screen I am whipping the mouse back and forth rather fast to exacerbate the issue for a better visual.

Orca-Bug-SlowDrag.zip

*Originally created by @jigglysackles on 10/5/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.0 build 70931e5 ### Operating System (OS) Windows ### OS Version Win10x64 v22H2 (build - 19045.4651) ### Additional system information CPU: Ryzen 3900X RAM: 32GB - DDR4-3200 GPU: Radeon 6700XT Gen4 NVME SSD ### Printer Bambu X1 Carbon, Voxel Lab Aquila X2 ### How to reproduce Start Orcaslicer Drag the Orca window by the title bar at the very top (projects being loaded or not doesn't seem to matter) witness slow drag fix? drop polling rate of mouse to 125Hz (from 1000Hz) drag window mostly normal drag behavior but still a little jumpy ### Actual results The window drags along the path the mouse takes but does so at a delayed rate and pace. It moves smoothly along the past until coming to the point where I let go of the mouse. While it's moving after I have let go of the button, my mouse is free to move again, but the window continues to move and there is still the image of my mouse cursor dragging it. I've read that this can be related to mouse polling rate and changing the polling rate does seem to help, but dragging the window still has some jitter even dropping the poll rate to 125Hz. ### Expected results The window should drag smoothly along the path of the mouse, in time with the location of the mouse. ### Project file & Debug log uploads Since this happens regardless of project or no project, and since there is no crash or apparent error, there isn't really a need for log files but I've attached them regardless. [log.zip](https://github.com/user-attachments/files/22705624/log.zip) ### Checklist of files to include - [x] Log file - [ ] Project file ### Anything else? Video of issue. In the moments where it's drug across the screen I am whipping the mouse back and forth rather fast to exacerbate the issue for a better visual. [Orca-Bug-SlowDrag.zip](https://github.com/user-attachments/files/22705633/Orca-Bug-SlowDrag.zip)

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Reference: github/OrcaSlicer#1995