When playing in splitscreen mode, the animations of the other player will play much quicker than they should for you, but your own animations will be fine (What I mean is, your character's animations will be normal to you, but to the player in splitscreen with you, that same animation plays faster than it should.).
Steps to reproduce
Eat a food item, punch the air, place a block, do basically anything that causes a character animation.
Observed result
The character animation plays faster (I calculated more than twice as fast as normal) than it should from the other player's perspective. (Yes, even the idle animation.)
Expected result
The speed of the animations in game should be constant for all players.
Linked issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-152176, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.