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[Regarding macOS Tahoe](Updated October 16, 2025)
macOS v26 Tahoe is now supported!
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Answers
When the fade function is on, between fading out of the current motion and fading in of the next motion, there is moment that motion has less effect to parameter value. Therefore it seems as if the model stops its motion.
If you'd like to check how the model moves before importing to Unity, you can use Cubism 2.1 viewer.
Thanks,