functions.php

<?php

/**
 * Only update share counts on single post
 * 
 * @param array $update_queue
 * @return array
 */
function be_update_share_count_on_single( $update_queue ) {
  
  if( is_singular() && !empty( $update_queue ) )
    $update_queue = array_key_exists( get_queried_object_id(), $update_queue ) ? array( get_queried_object_id() => $update_queue[get_queried_object_id()] ) : array();
  else
    $update_queue = array();
  
  return $update_queue;
}
add_filter( 'ea_share_count_update_queue', 'be_update_share_count_on_single' );