I modified the script using rpc “topdown controller” to make it work in multiplayer mode with a dedicated server , but faced with a motion tween on the client character for himself. In the active client character walks and runs in an inactive client
I get mine to replicate by using Anim Montages and play them from the Anim Blueprint. Basically I have an indicator that is set on the controller and this is used by the Anim Blueprint to decide what Montage to play. This works perfectly in multiplayer and I have had no issues.
The other way is to use a Multicast custom event and call your animation in there … but if you are using an Anim Blueprint your character will stop animating after that.
I am not sure whether it is a once off animation or not as you never specified.
Do not quite understand , can be a concrete example anim montages?