Slicing is super slow with Cura 5.6

[carnahans 0]

I noticed that since I upgraded to 5.6 that my slicing times have gone through the roof.

I have one model that takes over 4 hours to slice on Cura 5.6 on a Ryzen 9 3900x with 64GB of ram and a 1TB NVMe drive.

The same model slices in under 2 minutes on Cura 4.13 on an i5 with 8GB of ram and a 512GB SSD.

I'm hoping that 5.7 addresses this as the differences are staggering.

This is not the only model that I noticed such a large difference in slicing times and it doesn't matter which of my printers I'm slicing for. They are all slow.

Printers:
Tenlog TL-D3 Pro
Ender 3 v2
Ender 3 v3 SE

Edited March 12 by carnahans

[Slashee_the_Cow 480]

This is a known bug. It should be fine in Cura 5.4.0 or if you are comfortable with running software that is not ready for release and contains its own bugs there is 5.7.0 pre-alpha you can you can try.

[carnahans 0]

I did look at 5.7 pre-alpha and it's a bit too risky, for what i'm doing, but dropping back to 5.4 seems reasonable for the short term.

 

Thanks for the info.

[LePaul 354]

I know they are combating some crashes under Windows 11.  I'd give the Alpha a try.  I did and some models that were consisting blowing up in Cura 5.6 have been able to be sliced in 5.7a