Nice art style.
I'm not entirely sure what frames it's skipping or what the original would look like. Can you give us more details?
Are you talking about the flowers? What code did you use to play the animation? Is the whole thing a frame-by-frame animation?
If the whole animation is just a frame-by-frame animation, you may want to set the "Default Mix Duration" value on the skeleton data asset to 0 or otherwise something very low if it's a mix of skeletal and you don't have custom transitions.