Hi, first time poster, long time lurker here!
I'm currently working on a third person character controller system that uses rigidbody for movement. I ran into an issue where my rigidbody starts jittering really badly if I have Smooth Look At Direction in the same state that handles Add Force stuff for movement. Tried getting alternatives for this from the Ecosystem, but none of them helped with this issue. I heard that if an action is set into FixedUpdate it wouldn't cause jittering since it's designed for physics mainly. I can't find any alternatives that come with this option though. I'm also trying to avoid using Torque for rotating the character since I want movement to be as snappy and accurate as possible, while still preserving the physic engine's smoothness and freedom of movement.
Of course, one way I could fix this would be by rotating the character model instead of the rigidbody, but that would make directional forces, raycasting etc. so much more complicated to handle, and I would prefer to keep things as simple as possible at this point in development.