Duration
Duration changes the story.
The path and easing are identical. Only the duration changes, making it easier to judge where motion feels purposeful versus sluggish.
250mscubic-bezier(.2,.82,.24,1)
500mscubic-bezier(.2,.82,.24,1)
1000mscubic-bezier(.2,.82,.24,1)
2000mscubic-bezier(.2,.82,.24,1)