Bambu Studio crashes when trying to slice project

[GabrielQuintana]

Bambu Studio Version

1.8.2.56

Where is the application from?

Bambu Lab Official website

OS version

Windows 11 Home

Additional system information

CPU: i9-14900k
Memory: 64 GB 6400mhz
GPU: Asus Nvidia GeForce RTX 4070 Ti

Printer

Bambu Lab X1C

How to reproduce

Open the provided 3mf file in bambu studios, and click "slice plate"

Actual results

Bambu Studio crashes

Expected results

The plate should be successful sliced

Project file & Debug log uploads

Log and Project.zip

Checklist of files to include

• Log file
• Project file

[QingZhangBambu]

We found that some models cannot be sliced on Win 11. We'll try to fix this in next big version.

[QingZhangBambu]

[QingZhangBambu]

@GabrielQuintana is that still happend in the latest version on your PC?

[QingZhangBambu]

@GabrielQuintana holle, there is a method that some people said is helpful, may you try it and check if it is useful?.
For Win 11, here is how to set the affinity :
1- Open Task Manager (CTRL+SHIFT+ESCAPE)
2- Go to Details
3- find bambu-studio.exe and right click to chose "Affinity"

4- From the popup, it is possible to choose which thread(s) to use. For example, on my i9-13900K, I've got CPU0 to CPU31 (I've 8 performance cores with 2 threads, and 16 efficiency cores -> 32 "CPUs" listed)

And interestingly enough, when I slice without setting affinity (so, Bambu Studio uses all threads available) -> it crashes.
When I first set affinity to, for example, CPU0 to CPU3, or CPU0 to CPU7 -> slicing goes through successfully.

[GabrielQuintana]

@QingZhangBambu Latest version (without modifying affinity) is still having the same issue where bambu studio crashes.

Though after setting the affinity to CPU0 to CPU7 (also tried CPU25-31) I got the exact same result, slicing does goes through successfully.

[QingZhangBambu]

@GabrielQuintana Then when the Studio crashed?

[GabrielQuintana]

@QingZhangBambu Yes, it crashes when slicing on the new version too (When I don't do the affinity trick you mentioned). Should I provide logs again for the new version?

[QingZhangBambu]

yes, that would be helpful

[Blade-Strike]

I have the same exact issue. If I set infinity to 1-7 I'm good. Otherwise, it's a hard crash.
sys.txt

[QingZhangBambu]

@Blade-Strike maybe you can do some CPU tests. some users change the CPU and all problem be solved. https://community.intel.com/t5/Processors/i9-13900K-very-frequent-crashes-Windows-11-with-apps-games-and/m-p/1528789/highlight/true
#3354

[Arcaine10]

Good morning,
I may have found a solution without having to change the affinity each time. You have to download Intel extreme tuning utility, go to advanced tuning and set performance active-core tuning to 54. Since then I have had no more problems.

[GabrielQuintana]

@QingZhangBambu Sorry forgot to update here, the issue was 100% the CPU being unstable because of some motherboards and intel software overclocking the CPU too much. which made any CPU intensive procedures like slicing crash every so often. So I'm good to close this issue if you are.

For other people experiencing the same issue as I was, here's the thread that helped me https://www.reddit.com/r/overclocking/comments/1axepvu/optimizing_stability_for_intel_13900k_and_14900k/

[QingZhangBambu]

ok ;)

[elyograg]

Good morning, I may have found a solution without having to change the affinity each time. You have to download Intel extreme tuning utility, go to advanced tuning and set performance active-core tuning to 54. Since then I have had no more problems.

This worked for me. Slicing is now stable. I was having a ton of problems with it. Mostly it would just crash Bambu Studio, but sometimes it would bluescreen or freeze the system so completely that the mouse pointer wouldn't even move.

[Pan-Chenliang]

Good morning, I may have found a solution without having to change the affinity each time. You have to download Intel extreme tuning utility, go to advanced tuning and set performance active-core tuning to 54. Since then I have had no more problems.

This worked for me. Slicing is now stable. I was having a ton of problems with it. Mostly it would just crash Bambu Studio, but sometimes it would bluescreen or freeze the system so completely that the mouse pointer wouldn't even move.

Same phenomenon on my 14900k, mouse pointer couldn't move, then bambu studio crashed or even blue screen.

[masystems]

Got the same issue here, had to set it use CPU0-7. Bambu, please fix your software.

[elyograg]

I did have this working with the changes to the Intel Extreme Tuning program, but it has started crashing again when slicing certain models. I didn't change anything.

Bambu Studio also crashes slicing the same model, but it causes a bluescreen instead of crashing the program.

[Skydev0h]

For me I had issue on an Intel i9-14900K, and it seems that the issue is in multithreading on both P-Cores and E-Cores.
Using a free CoreDirector utility I configured constraining bambu-studio.exe to P-Cores, and that not only fixed the crashes, but also sped up slicing by a significant margin.

Behind the scenes the application automatically configures process affinity to use only P-Cores and stay away from E-Cores. The possible issue is that P-Cores and E-Cores may be seen by the app or system as two different processors, and that may cause unexpected issues when accessing shared resources from multiple threads.

For me this is certainly not a stability issue, because I compiled some large Rust projects using all P and E cores (cpu load was about 100% for extensive amount of time) and that did not crash my system.