[Cura] - 100% CPU and file not sliced in 5 hours

[khpetrov]

Cura Version

5.4.0

Operating System

Windows 10

Printer

Any printer

Reproduction steps

1. Download the STL file, from the attached zip
2. Open it with Cura
3. Load any profile
4. Load any printer
5. Slice it

Actual results

CPU goes up to 100% and stays at max until slicing is canceled. The file cannot be sliced in more than 5 hours.
The same file with Prusa is processed in less than 30 seconds.

Expected results

The file to be sliced in a comparable time to Prusa.

Add your .zip and screenshots here ⬇️

drying_pad.zip

[GregValiant]

Thanks for the report.
That's pretty bad. I ran a race between 4.13.1, 5.4, 5.5, and Prusaslicer. Prusaslicer finished, had dinner, and watched a movie before 5.4 finished. I gave up on 4.13 and 5.5.
A similar model came through here a couple of weeks ago and it had a lot of square shapes on the build plate. Turning off "Optimize Wall Printing Order" made a big difference on that one. I tried that with your model. It didn't really make a dent.

@MariMakes and the Cura team will take a look at this one.

[khpetrov]

Thank you for the prompt response. I am so sorry to hear that such an issue comes straight from Cura core, and it exists in pretty much all versions of Cura. I really like using Cura, but having a major malfunctioning issue is more than a solid reason for me to reconsider my priorities for using other slicing software. I would never give up of Cura if it had some chance to compare with Prusa, but half a minute slicing time for Prusa vs many hours for Cura or even days...they are not in the same category. I really hope that Ultimaker will demonstrate enough will to improve their product performance. Best Regards, Koko

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On Fri, Oct 13, 2023 at 11:31 PM GregValiant ***@***.***> wrote: Thanks for the report. That's pretty bad. I ran a race between 4.13.1, 5.4, 5.5, and Prusaslicer. Prusaslicer finished, had dinner, and watched a movie before 5.4 finished. I gave up on 4.13 and 5.5. A similar model came through here a couple of weeks ago and it had a lot of square shapes on the build plate. Turning off "Optimize Wall Printing Order" made a big difference on that one. I tried that with your model. It didn't really make a dent. @MariMakes <https://github.com/MariMakes> and the Cura team will take a look at this one. — Reply to this email directly, view it on GitHub <#16974 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AM5I3E5PPNDOE27AH4QSE3TX7GQJFANCNFSM6AAAAAA565DC4Q> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[MariMakes]

Welcome to the UltiMaker Cura Github 🚀
Thanks for your report 👍

This seems to be a duplicate of #17104
We have a ticket on our backlog with the intent to improve this behavior. 💪

I'll be closing this issue as a duplicate but you can follow the progress here: #17104