Themes are compiled once the first time they are needed. After that the compiled theme is simply loaded w/o any extra processing. However, if you are attempting to develop a theme or language pack you may find that sometimes your changes are not reflected in the theme when you refresh. If you enable this setting the theme output will be recompiled on every page request.

If you're not developing a theme or language pack then there is NO REASON to leave this setting enabled. Doing so will only put more strain on your server and slow down your website and saved to disk.

<b>This setting has no effect if "Compile to Disk" is set to "No".</b>

<b>See Also:</b> "Compile to Disk" (fetch_compile)
<b>Recommendation:</b> Disabled