Smooth Sync: Sync your Transforms Smoothly across the network

Have you disabled the built in “Replicate Movement” on the character so it’s not fighting with Smooth Sync? Usually character stuff with Smooth Sync is pretty straight-forward, you just throw the Smooth Sync component onto it and disable “Replicate Movement” and it works. You can test it out in an isolated environment by loading up a fresh project using the Third Person Template. You should only need to do those two steps and to get it syncing using Smooth Sync.