Cursor slowdown when pressing left/right arrows and there is a lot of text in the prompt

I have just an hello world project with few lines of code:

use reedline::{DefaultPrompt, DefaultPromptSegment, Reedline, Signal};


fn main() {
	let mut line_editor = Reedline::create();
	let prompt = DefaultPrompt::new(DefaultPromptSegment::Basic("ok".to_string()), DefaultPromptSegment::Empty);

	loop {
            let sig = line_editor.read_line(&prompt);
            match sig {
                Ok(Signal::Success(buffer)) => {
                    println!("We processed: {}", buffer);
                 },
                Ok(Signal::CtrlD) | Ok(Signal::CtrlC) => {
                    println!("\nAborted!");
                    break;
                 },
                 _ => { },
             }
         }
    }	
}

When I run this very simple project, with a very short text prompt, I have noticed that when I press the left or right arrows, there is some kind of delay - internally - that makes the cursor not responsive!
Indeed, if I leave the arrow keys, I noticed that the cursor is still moving, and doesn't stop immediately.
Again, it's like there is a little and subtle delay, but very annoying.
I've attached a video to show this, as you can see from the video, when I leave my finger from the arrow key, the cursor is still moving...
NOTE: This DOES NOT happen with other command-lines prompt crates.

https://github.com/nushell/reedline/assets/12814431/c77d4c7d-5766-4d83-ad85-0fd1110cdee1

Start by reproducing the delay with the Rust example in the issue, then investigate the arrow-key handling and cursor movement while editing a long prompt. The issue names no source files or tests; done means left/right movement stops promptly when the key is released without regressing normal prompt editing.