Hello, newbie here. I’ve had the A1 Combo for about six months and am finally getting decent prints after some trial and error.
Recently, I’ve been running into a repeatable issue with Bambu Studio. When I download certain 3MF files from MakerWorld, even ones with lots of successful prints and reviews, Bambu Studio will crash and close during slicing about 50% of the time. There’s no error message. When it happens, it almost always crashes on the same file.
I’ve tried adjusting settings, but that hasn’t helped. The only changes that sometimes allow slicing are changing the support type or simplifying the model to reduce the triangle count. Even then, it only works occasionally, and simplifying the model usually degrades print quality.
Some people have suggested this is a PC issue, but I’m skeptical. I’m running a high-end system (Windows 11, i9-14900K, 64 GB RAM, RTX 4090, NVMe storage) that has no stability issues elsewhere, including demanding games. The printer itself works fine, so I’m leaning toward certain 3MF files or a Bambu Studio issue.
Has anyone else seen consistent slicing crashes like this with specific 3MF files? Are there known workarounds or settings that help?
The very fact that you are using a high-end system could be the cause of your problem.
Google AI:
“Bambu Studio Affinity” refers to setting the CPU core affinity for Bambu Studio, often to fix crashes during slicing, by using your OS’s Task Manager (Windows) or tools like Process Lasso to limit the software to fewer cores (e.g., 0-7), preventing it from overwhelming high-core CPUs, with Affinity Designer being a related design software often used to create SVGs for Bambu Studio.
How to Set CPU Affinity in Bambu Studio (Windows)
Open Task Manager: Press Ctrl+Shift+Esc.
Go to Details: Click the “Details” tab.
Find Bambu Studio: Locate bambu-studio.exe in the list.
Set Affinity: Right-click the process and select “Set affinity”.
Limit Cores: Deselect <All Processors> and manually select a smaller number of cores (like 0-7 or 0-11) to prevent crashes, especially on newer CPUs with many cores, as suggested in this Reddit thread and this GitHub issue.
It’s likely the issue is caused not by the sheer number of cores, but by the fact that the processor in question (i9-14900K) has both P-cores and E-cores.
I have nearly as many total threads (28) in my CPU as the i9-14900K (32), but all 14 of my cores are P-cores, instead of the 8P and 16E of the i9-14900K.
I haven’t had any issues slicing files I have downloaded from Makerworld.
