How to speed up bootstrap modal window appearance?

Question

JavaScript

Good afternoon,

for some reason my modal window is loaded with a delay, I want to speed it up - who came across it?

Here is my code >>>

$this->registerJS('
$(\'#updateButton-A, #updateButton-B, #updateButton-M, #updateButton-Z\').click(function(){
    $(\'div#updateContent\').empty();
        $(\'#modal\').modal(\'show\')
            .find(\'div#updateContent\')
            .load($(this).attr(\'value\'));
        });
');

did no one come across? with the fact that the popup opens with a delay with a slight hang