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Sorry my reply was confusing. What I wanted to highlight it that the demo which shows the ExpoScaleEase next to the Linear Easing is working fine (both easing) so it has nothing to do with the easing per say. What I don't understand is how both animations within that demo are looking perfect on Firefox while there are no tricks with the rotation. I've reproduce the exact same code but locally pixel snapping on firefox is showing (with or without any easing regardless). Could that be around the way the iframe renders it within Codepen?

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Thanks for the feedback.

The ExpoScaleEase sample is a mystery as it works fine without any tricks like rotating (it seems).

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It seems I'm getting the "pixel snapping" issue on Firefox.  I've been trying the rotation trick but it's not perfect.

Also I was looking at this and it's seems perfect on Firefox: https://codepen.io/GreenSock/pen/VQQPNG

Any idea why that would be different over there?