Access Lane Initialisation setting | WordPress.org

U[pdate: I ahve located the Late Initialisation setting but it is greyed out.

Hello @androidandreas

Thank you for reaching out and I am happy to help!

The Late initialization: is not available (Greyed out) when the Disk: Enhanced caching method is selected for Page Caching in the general settings.
In order to use this option, you need to change the caching method to Disk: Basic, APC, or memory-based caching like Redis or Memcached if available on the server.

I hope this helps!

Thanks!