Admin load time exceeded server limits

What number of smart blocks are we talking about here?

Also, what page is the one that gets slow, the edit page or the widgets page? It’s in the administration panel, right?

Roughly 900 smartblocks. It is when admin is logged-in to edit a page the load time is 2 minutes (also the display of widgets menu option). It makes editing almost impossible.

We suspect the amount of posts that is loading takes a long time.
Could it be the loading part in the class-swboc-widget.php on line 19-30 AND in the form function om line 56-75 ?
Can it be made faster (more efficient) to load?

class-swboc-widget.php in the widget function:

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

if ( ! empty( $swboc_title ) )
   echo $before_title . $swboc_title . $after_title;

  $args = array (
   'post__in'  => array ( $swboc_id ),
   'post_type' => 'smartblock',
  );

  $swboc_posts = get_posts( $args );

  remove_filter( 'the_content', 'prepend_attachment' );

  foreach ( $swboc_posts as $post ) {
   echo apply_filters( 'the_content', $post->post_content );
  }

class-swboc-widget.php in the form function om line 56-75
  $args = array (
   'post_type'      => 'smartblock',
   'posts_per_page' => -1,
   'orderby'        => 'ID',
   'order'          => 'ASC'
  );

  $swboc_posts = get_posts( $args );

  foreach ( $swboc_posts as $post ) {
      $currentID = $post->ID;

   if ( $currentID == $swboc_id ) {
    $extra = 'SELECTED';
   } else {
    $extra = '';
   }

   echo '<option value="' . $currentID . '" ' . $extra . '>' . $post->post_title . '</option>';
  }