Enemies only move at lower than 60 FPS

Help
,
1

Godot Version

4.2.1

Question

I am trying to learn using this project (one of few c# ones):

The project is at 30fps. i would like to run this at 60fps.

I did this by setting the Engine.maxfps = 60 in the project.godot/editor

Now the enemies stop moving towards me.

here is the snippet responsible for moving the enemy:

Enemy extends RigidBody3D

    public override void _PhysicsProcess(double delta)
    {
        base._PhysicsProcess(delta);

        var playerPos = _gameManager.Player.GlobalPosition;
        var direction = (playerPos - GlobalPosition).LimitLength();

        LinearVelocity = direction * MovementSpeed;
    }

If i make the window a little bit larger the FPS drops ~52 and the enemies start moving.

I believe the logic is right, and not sure why this is happening.

I tried to print the double delta and it prints 0.01666666…