Delay content loading on wordpress loop to speed up page - php

Question

i'm developing a real estate page, you can check it out here. As you can see, the page take some time to load, because it loads all the 50 apartments/houses at once.
To speed up the page, i want to know if there is any way to delay the load, so the page load faster.
Here is the loop code, i'm wondering what could work, for example if i put some "if/else" condition before the wordpress make a loop (while ( $newsLoop->have_posts() ) : $newsLoop->the_post();?>), but i don't know how to do it. The ideal for me is that the contents are loaded 3 on 3, or "row by row", once a row have 3 apartments.
<div class="portfolio-items2">
<?php
$newsArgs = array(
'post_type' => 'property',
"orderby" => 'meta_value_num',
"meta_key" => 'numerooff',
"order" => 'DESC',
'tax_query' => array(
array(
'taxonomy' => 'property-status',
'field' => 'slug',
'terms' => 'oneoff',
)
)
);
$newsLoop = new WP_Query( $newsArgs );
while ( $newsLoop->have_posts() ) : $newsLoop->the_post();?>
<div class="col-md-4 shortcode-col listing_wrapper <?php meta('seletoroff');?>" >
<div class="property_listing" data-link="http://www.onecia.com.br/imoveis-de-luxo/<?php /* Property ID if exists */ $property_id = get_post_meta($post->ID, 'REAL_HOMES_property_id', true); if(!empty($property_id)){ echo ''.$property_id; }?>">
<div class="listing-unit-img-wrapper">
<div class="property_media"> </div>
<a href="http://www.onecia.com.br/imoveis-de-luxo/<?php /* Property ID if exists */ $property_id = get_post_meta($post->ID, 'REAL_HOMES_property_id', true); if(!empty($property_id)){ echo ''.$property_id; }?>">
<img width="525" height="350" src="<?php meta('imagemoff');?>" class="lazyload img-responsive wp-post-image" alt="" sizes="(max-width: 525px) 100vw, 525px" />
</a>
<div class="tag-wrapper"><div class="featured_div"><?php meta('porcentooff');?></div></div>
</div>
<h4>
<a href="http://www.onecia.com.br/imoveis-de-luxo/<?php /* Property ID if exists */ $property_id = get_post_meta($post->ID,'REAL_HOMES_property_id', true); if(!empty($property_id)){ echo ''.$property_id; }?>">
<?php meta('titulooff');?>
</a>
</h4>
<div class="property_location_image">
<a href="http://www.onecia.com.br/imoveis-de-luxo/<?php /* Property ID if exists */ $property_id = get_post_meta($post->ID,'REAL_HOMES_property_id', true); if(!empty($property_id)){ echo ''.$property_id; }?>" rel="tag">
<span style="font-size: 15px;"><?php meta('bairrooff');?> </span>
</a>
</div>
<br>
<div class="property_listing_details">
<?php
$post_meta_data = get_post_custom($post->ID);
if( !empty($post_meta_data['REAL_HOMES_property_size'][0]) ) {
$prop_size = $post_meta_data['REAL_HOMES_property_size'][0];
echo '<div class="inforoom">'. $prop_size .'m² <div class="info_labels"><img src="http://www.onecia.com.br/wp-content/themes/site2016/images/icon-size.png" style="max-width: 14%; height: auto;"></div></div>';
}
if( !empty($post_meta_data['REAL_HOMES_property_bedrooms'][0]) ) {
$prop_bedrooms = floatval($post_meta_data['REAL_HOMES_property_bedrooms'][0]);
$bedrooms_label = ($prop_bedrooms > 1)? __('Bedrooms','framework' ): __('Bedroom','framework');
echo '<div class="infobath">'. $prop_bedrooms .'<div class="info_labels"><img src="http://www.onecia.com.br/wp-content/themes/site2016/images/icon-bed.png" style="max-width: 17%; height: auto;"></div></div>';
}
if( !empty($post_meta_data['REAL_HOMES_property_bathrooms'][0]) ) {
$prop_bathrooms = floatval($post_meta_data['REAL_HOMES_property_bathrooms'][0]);
$bathrooms_label = ($prop_bathrooms > 1)?__('Bathrooms','framework' ): __('Bathroom','framework');
echo '<div class="infosize">'. $prop_bathrooms .'<div class="info_labels"><img src="http://www.onecia.com.br/wp-content/themes/site2016/images/icon-bath.png" style="max-width: 17%; height: auto;">
</div></div>';
}
?>
</div>
<div class="listing_unit_price_wrapper">
<span class="price_label price_label_before" style="text-decoration: line-through;">De: R$ <?php meta('valordeoff');?></span><br>
<span style="text-decoration: underline; font-size: 22px; font-weight: bold;">Por: R$ <?php meta('valoroff');?> </span>
<span class="price_label"></span>
</div>
</div>
</div>
<?php endwhile; ?>
</div>
I've already installed some plugins, but none of them worked.