add_filter( 'autoptimize_filter_imgopt_lazyload_from_nth', function(){ return 5; } );
Update: as from AO 2.8.2 this will also be an option on the settings page, see screenshot :)
add_filter( 'autoptimize_filter_imgopt_lazyload_from_nth', function(){ return 5; } );
Update: as from AO 2.8.2 this will also be an option on the settings page, see screenshot :)