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[About Cubism Editor / SDK 5.4 Alpha](Updated: July 14, 2026)

You can download the alpha installer from the dedicated forum below.
If you have any feedback regarding the alpha version, including feature requests or bug reports, please use the same forum.

Cubism Editor / SDK 5.4 Alpha Forum
https://creatorsforum.live2d.com/c/cubismeditorsdk54alpha/

[Regarding macOS Tahoe](Updated October 16, 2025)

macOS v26 Tahoe is now supported!
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/
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UtSystem or Date() faster?

RusRus
edited February 2016 in Help
I need a simple clock to run in the background while the game is progressing.

I have the choice of using :
JavaScript's requestAnimationFrame() in conjunction with either :
  • UtSystem.getUserTimeMSec() or
  • JavaScript's Date().
I would like to ask: which is more efficient?
Thank you in advance
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