Have you tried making changes yourself using CSS? Because the spacing between the images is not the Enfold standard spacing when set to “large gap.”

so in total : replace the snippet by:
( btw. i changed the code on my page too – if you hover the snippet there is on top right of the codeblock a copy button)

/**
 * Enfold Masonry Caption Fix - NUR für Perfect Grid
 * Schiebt die Caption unter das Bild, ohne es zu verdecken.
 */

function enfold_masonry_perfect_grid_caption_fix() {
?>
<style>
    /* ========================================
       PERFECT GRID CSS
       ======================================== */
    
    /* Erlaubt der Caption, über den Container hinauszuragen */
    #top .av-masonry.av-fixed-size.av-masonry-gallery .av-inner-masonry,
    #top .av-masonry-gallery.av-masonry-gallery-fixed figure.av-inner-masonry {
        overflow: visible !important;
    }
    
    /* Positioniert die Caption direkt unter das Bild-Quadrat */
    #top .av-masonry.av-fixed-size.av-masonry-gallery .av-inner-masonry-content,
    #top .av-masonry-gallery.av-masonry-gallery-fixed figcaption.av-inner-masonry-content {
        position: relative !important;
        top: 100%;
        background: #ffffff; /* Hier ggf. deine Wunschfarbe für den Hintergrund */
    }

    /* Korrektur für Tablets */
    @media only screen and (min-width: 767px) and (max-width: 989px) {
        .responsive .av-masonry-gallery .av-masonry-entry .av-masonry-entry-title + .av-masonry-entry-content {
            display: block !important;
        }
    }
</style>
    
<script>
    (function($) {
        'use strict';
        
        function fixPerfectGrid() {
            // Nur für Masonry Galerien mit festem Raster (Perfect Grid)
            $('.av-masonry-gallery.av-masonry-gallery-fixed, .av-masonry.av-fixed-size.av-masonry-gallery').each(function() {
                var $gallery = $(this);
                var columnCount = 1;
                
                // Spaltenanzahl ermitteln
                if ($gallery.hasClass('av-masonry-col-2')) columnCount = 2;
                else if ($gallery.hasClass('av-masonry-col-3')) columnCount = 3;
                else if ($gallery.hasClass('av-masonry-col-4')) columnCount = 4;
                else if ($gallery.hasClass('av-masonry-col-5')) columnCount = 5;
                else if ($gallery.hasClass('av-masonry-col-6')) columnCount = 6;
                
                if ($gallery.hasClass('av-masonry-col-flexible')) {
                    var $items = $gallery.find('.av-masonry-item-with-image:visible');
                    if ($items.length >= 2) {
                        var firstTop = $items.eq(0).offset().top;
                        var itemsInFirstRow = 1;
                        for (var i = 1; i < Math.min($items.length, 10); i++) {
                            if (Math.abs($items.eq(i).offset().top - firstTop) < 10) {
                                itemsInFirstRow++;
                            } else { break; }
                        }
                        columnCount = itemsInFirstRow;
                    }
                }
                
                // Maximalhöhe der Captions finden, damit die Zeilen gleichmäßig bleiben
                var maxCaptionHeight = 0;
                $gallery.find('.av-masonry-item-with-image').each(function() {
                    var $caption = $(this).find('figcaption.av-inner-masonry-content, .av-inner-masonry-content');
                    if ($caption.length && $caption.is(':visible')) {
                        maxCaptionHeight = Math.max(maxCaptionHeight, $caption.outerHeight(true));
                    }
                });
                
                // Abstand unten einfügen, damit das Masonry-Layout Platz für die Caption lässt
                if (maxCaptionHeight > 0) {
                    $gallery.find('a.av-masonry-entry, .av-masonry-item-with-image').css('margin-bottom', maxCaptionHeight + 'px');
                }
            });
            
            // Layout neu berechnen
            $('.av-masonry-gallery.av-masonry-gallery-fixed, .av-masonry.av-fixed-size.av-masonry-gallery').isotope('layout');
        }   

        // ========================================
        // INITIAL LOAD - Nur auf Bilder warten, nicht auf die ganze Seite
        // ========================================
        (function() {
            var $gallery = $('.av-masonry-gallery');
            
            if ($gallery.length && typeof $.fn.imagesLoaded === 'function') {
                // Wartet NUR auf die Bilder in der Galerie
                $gallery.imagesLoaded(function() {
                    setTimeout(fixPerfectGrid, 200);
                });
            } else {
                // Fallback für den Notfall
                setTimeout(fixPerfectGrid, 600);
            }
        })();

        
        // Nach Enfold Events
        $(document).on('av-masonry-complete', function() {
            setTimeout(fixPerfectGrid, 250);
        });
        
        // Bei Größenänderung
        $(window).on('debouncedresize', function() {
            // Reset Margin
            $('.av-masonry-gallery.av-masonry-gallery-fixed .av-masonry-item-with-image, .av-masonry.av-fixed-size.av-masonry-gallery .av-masonry-item-with-image').css('margin-bottom', '');
            fixPerfectGrid();
        });
        
    })(jQuery);
</script>
<?php
}
add_action('wp_footer', 'enfold_masonry_perfect_grid_caption_fix', 999);

i also replaced the on load event by:

// Run initially
$(window).on('load', function() {
    $('.av-masonry-gallery').imagesLoaded(function() {
        setTimeout(fixAllMasonryModes, 200);
    });
});

and implemented the enfold debounceresize function on performance reasons.