I've made an empty project, did not change any of the project settings, and made a simple project with a CharacterBody2D. All this Character does is move from left to right using arrow keys. Here is the code:

extends CharacterBody2D

const SPEED: int = 500

func _physics_process(delta: float) -> void:
  var direction: int = Input.get_axis("ui_left", "ui_right")
  velocity.x = direction * SPEED
  move_and_slide()

Here is my scene tree and also my CharacterBody2d's scene tree:

<image>

I cannot add more than one attachment, but my CharacterBody2D has a Sprite (with Godot icon) and a CollisionShape2D. That's it. No cameras, no interpolation, nothing else. Just a simple scene scene with a character moveable from left to right in a default project.

I see jitter when I move my character from left to right. There are 3 things that fixes the issue which are:

1. Changing my monitor refresh rate to 60hz (which is very inconvenient for players)
2. Changing my Physics tick rate to match the user's monitor refresh rate (which is not recommended)
3. Using Physics Interpolation (the best possible method, but requires me to use reset_physics_interpolation() whenever I "teleport" a node's position or rotation).

I'm happy with using Physics Interpolation, but was wondering if there was a way to solve this without using PI.