TLDR: Check this video to see my issue - UE4 Client / Server movement error - YouTube
Clearly an issue with replication or character movement or animation of some sort - not sure how I should try fixing this as I’m new to networking. 
Any help much appreciated, here’s what I’ve tried:
- Toggle Orient Rotation
- Toggle use controller desired rotation
- Uncheck always relevant in character details
I’m basically running just a ThirdPersonCharacter template, copied how UE have done their animation state machines, and tried to run 2 clients.
Happy to provide any other screenies - thanks for the help!
EDIT: Also found that for some reason client is not sprinting anymore? Replication error: sprinting - YouTube I ramped up the speed to clearly see and it just isnt working anymore…