Does BP sometimes skip frames ?

I have a FSM in an animation instance. There is one animation in one state. The state is supposed to go back to Idle state when the remaining ratio of animation is less than 0.1. However, I found out the animation will go to play second times and play first few frames.

The default Transition Blend Time is 0.2
If your Remaining TIme is 0.1, it will start to blend.
Since the Blend Time is 0.2, it will pose the animation additional 0.1 seconds.
Dont loop the animation and it should work fine.