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[Regarding macOS Tahoe](Updated September 18, 2025)

We cannot guarantee the compatibility of the current releases of Live2D Cubism Editor and Cubism SDK with macOS Tahoe.
We advise against upgrading your macOS at this time as it may cause Live2D products not to function correctly.

Upgrading macOS can also cause you to lose your Cubism Editor license file.
Please make sure to deactivate your Cubism Editor license before upgrading the macOS.

For more details:
https://help.live2d.com/en/other/other_09/
For inquiries regarding issues with license purchases or license activation errors, please contact us through the email form.

Live2d suddenly VERY slow

No idea why, as I've made a couple models in the past and have had no problems, but now doing most anything freezes the program and makes me wait a long time to load. Anything from copying/pasting a mesh or resizing a deformer. Saving is the worst and can take up to ~5 minutes. Also, the physics menu is practically impossible to use now and is too laggy to even see if anything is working.

I've tried reinstalling, which helped maybe a tad, but it's still so agonizing to use. I don't think it's my computer, as it's pretty high quality and new and can play pretty CPU intensive video games, so I don't know why it would suddenly just break on me.

Specs:
Cubism Editor 4.0.09
Win 10 Home 64bit
Intel i7 3.70ghz
32gb RAM
4095MB NVIDIA GeForce RTX 2060 SUPER (Gigabyte)
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