[2D] Sprite flickers/is choppy when moving

The movement of my player sprite is very choppy, almost as if it "flickers." The sprite is 16x24 and I have tried just about everything I can to fix this issue, I have searched everywhere.

• The camera is orthographic, size 100,

• The player sprite is 16x24, PPU 1, point filter, 16-bits format

• The player gameObject is scale 1,1,1

• Rigidbody 2d, interpolate none, is NOT kinematic

• Quality settings: anisotropic textures disabled, anti aliasing disabled, v sync count every v blank

Here's the movement code that is applied to the player (commented out parts of other solutions I tried for the movement)

         if(Input.GetKey(KeyCode.A))
         {
             //Vector2 newPos = new Vector2(this.transform.position.x - 4f, this.transform.position.y);
             //this.gameObject.transform.position = Vector3.Lerp(transform.position, newPos, playerSpeed * Time.smoothDeltaTime);
             //this.gameObject.transform.position = Vector2.MoveTowards(this.gameObject.transform.position, newPos, playerSpeed * Time.deltaTime);
 
             this.gameObject.GetComponent<Rigidbody2D>().AddForce(-Vector2.right * playerSpeed * Time.smoothDeltaTime);
             this.gameObject.transform.eulerAngles = new Vector2(0, 180);
             
             isFacingRight = false;
             isFacingLeft = true;
             
             isMoving = true;
         }
         
         if(Input.GetKey(KeyCode.D))
         {
             //Vector2 newPos = new Vector2(this.transform.position.x + 4f, this.transform.position.y);
             //this.gameObject.transform.position = Vector3.Lerp(transform.position, newPos, playerSpeed * Time.smoothDeltaTime);
             //this.gameObject.transform.position = Vector2.MoveTowards(this.gameObject.transform.position, newPos, playerSpeed * Time.deltaTime);
 
             this.gameObject.GetComponent<Rigidbody2D>().AddForce(Vector2.right * playerSpeed * Time.smoothDeltaTime);
             this.gameObject.transform.eulerAngles = new Vector2(0, 0);
             
             isFacingRight = true;
             isFacingLeft = false;
             
             isMoving = true;
         }

If anyone has any suggestions AT ALL, please share. I have spent days trying to resolve this issue.

Thank you.