Lag when the player is crouched

Hi I was finalizing the character animations when suddenly I meet in an obstacle, I had just finished the animations of when the character is crouching but I noticed that if I put “Play as client” and I crouch while I walk I noticed that my character has this slight lag, can you help me?

Thanks <3

You can find the video dimostration here: https://drive.google.com/file/d/18jAgTa8ru18jy-htVImqPQ79ab4H9Jax/view?usp=sharing