Some people asked for documentation/ information on that new autoptimize_filter_imgopt_lazyload_from_nth filter which allows one to tell AO not to optimize the first X images found in the HTML, so here is an example code snippet that sees AO not lazyload the first 5 images:

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 :)