Jitter problem for hero character with camera follow

Hello,

I have a jitter problem with a large-sized model moving at fast speeds when interpolation is enabled for the hero character. It is important to have interpolation on to make the scene appear smoother, it's just the hero character jitters.

I have a cinemachine camera set to follow, but with some testing, this appears more relevant to Unity/Physics than cinemachine itself.

I have included an example project showing a follow object's jitter. It's a scaled cube but represents the actual size of the model with its colliders that I am using in my project that is scaled to 1,1,1. and jitters just as much.

In the example project, I've made it as simple as I could, an initial force is applied to the ship and that's it. The ship then continues under its own momentum without any drag.

Needs:

• Camera to track the ship (player)
• Interpolation enabled for the ship (player) for smoother camera movement of the game world.
• Dampening on the camera is needed on the cinemachine camera for the ship to feel like it has weight in movement and rotation.
• Appropriate sized models to maintain the weight of physics interactions of warship-sized ships

Problem:
Enabling interpolation causes the ship (player) to jitter while the camera moving around the game world appears smooth.

 

Just a hunch: scaling up an interpolated physics body will also scale the interpolation inaccuracy. This is similar to network prediction to compensate for lag.

If someone confirms this the only solution I can think of would be to roll your own interpolation, or update fixed timestep to be in sync with frame updates.

 

There is scaling in this repro, but no scaling in my project. If you replace the cube with a similar-sized model without scaling it still jitters.

 

For reference: https://forum.unity.com/threads/camera-jitter-when-using-interpolation-for-player.1306971/