Website loading slowly - Advanced Custom Fields images

Question

I'm currently using get_field with Advanced Custom Fields plugin (see here) to get a single image for search results. The end result is that these pages are loading slow, as I believe this is due to MySQL returning the whole array of all images in the gallery for the specified page, which ends up being huge.

To load the image, I am currently doing the following:

$image = get_field('house_photos'); 

    if ($image) {

        echo '<img src="' . $image[0]['sizes']['house_search'] . '"  />'; 

    } 

Is there a more efficient way just to get this single image without requesting the entire array?