title: Fixed vs. variable frame rates in games: what is best, and when?
body: <p>After working for a while developing games, I've been exposed to both variable frame rates (where you work out how much time has passed since the last tick and update actor movement accordingly) and fixed frame rates (where you work out how much time has passed and choose either to tick a fixed amount of time or sleep until the next window comes).</p>
  
  <p>Which method works best for specific situations? Please consider:</p>
  
  <ul>
  <li>Catering to different system specifications;</li>
  <li>Ease of development/maintenance;</li>
  <li>Ease of porting;</li>
  <li>Final performance.</li>
  </ul>