Transition effect when selecting product attributes is unstable

I want to ask that every time I choose to change the product color to black or white, sometimes the transition effect is very stable, but sometimes the transition effect is a bit jerky like in the video, what is the cause and how to fix it?

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Hello,

Is there any chance that you could give me access to the dashboard area so I can have a look at the settings on your website, please?

Kind Regards

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