Fix Horizontal Camera Lag
Disconnects the horizontal camera movement from the entity you are riding, eliminating the lag when looking around and riding something (see youtube video). Fully client side
Fix for MC-259512
Mod loaders
This mod is available for Fabric and NeoForge
Multiplayer Warning
This mod doesn't change how entities are moved in any way, but this mod may give you a slight advantage due to the nature of what it does.
If you want to be absolutely safe, you can disable the mod from the config menu while playing in multiplayer