If statement bug? (Glitch)

For some reason my if statement is not working as it should.

  private void Update()
    {
         i = Mathf.Round(transform.position.z + 14.96f);
         tm.text = i.ToString() + " m";
     }
 
     public void HighScore()
     {
         GameObject HighScoreObj = Instantiate(highScore);
         HighScoreObj.transform.position = new Vector3(transform.position.x + 4.4f,transform.position.y + 3.2f,transform.position.z - 0.12f);
         if (i > PlayerPrefs.GetFloat("HighScore"))
         {
             highScore.GetComponent<TextMeshPro>().SetText("New Record!");
             PlayerPrefs.SetFloat("HighScore", i);
             PlayerPrefs.Save();
         }
         if (i < PlayerPrefs.GetFloat("HighScore"))
         {
             highScore.GetComponent<TextMeshPro>().SetText("Record " + PlayerPrefs.GetFloat("HighScore") + "m");
         }
         Time.timeScale = 0;
     }

It is setting the text of what it should have been in the last playmode. For example, if i = 10 and PlayerPrefs.Float = 5 when HighScore() is called the text changes to "Record ". And if I enter another playmode test, it will make the text say "New Record!" even if i is less then the playerpref float. So summed up, it pretty much returns the if statement of the last playmode test. Is this a glitch with Unity or what? It is very frustrating because it is such basic code and yet I have not got it working, so any help would be very appreciated!