How to remove Jitter when moving sideways in 3D?

Question

I don't have Jitter when moving forward or backward but when moving left or right or orbiting around an object and looking at it, there is a subtle jitter.

Here is the project: http://www.filedropper.com/jitter

Use WinRAR to unpack it.
Look at the blue capsule and go around it to see the jitter.

Using a 75hz monitor, could that be a problem?

Answer 1

This is due to Godot not featuring physics interpolation. Monitor refresh rates that don't match the physics update rate (60 by default) will make the jittering more noticeable.

You can resolve this by installing, enabling and configuring lawnjelly's smoothing-addon.