Hi Guys i’m trying to create a sort of custom page builder,
i have a Group with a select box and a series of groups shown depending on that select value.

Unfortunately after 5 or 6 module added the browser start to be very slow in adding new modules (minutes)

I tried to search in the forum without luck

I tried also commenting
add_filter('get_meta_sql', array('piklist_wordpress', 'get_meta_sql'), 101, 6);

as mentioned here:

performance drop with lots of conditional statements

But no effect…

Here the code:

piklist('field', array(
      'type' => 'group'
      ,'field' => 'module_group'
      ,'label' => 'Page Modules'
      ,'value' => 'none'
      ,'add_more' => true
      ,'fields' => array(
        array(
              'type' => 'select'
              ,'field' => 'module_select'
              ,'label' => 'Select a Module'
              ,'columns' => 12
              ,'choices' => array(
              'none' => 'Select a Module to add'
              ,'full_w_slide' => 'Full Width Slide'
              ,'slide_text_dx' => 'Slide + Testo a DX'
              ,'slide_text_sx' => 'Testo a SX + Slide'
              ,'3_column_text' => 'Testo 3 Colonne'
              ,'quadreria_img' => 'Quadreria Immagini'
              ,'quadreria_img_irreg' => 'Quadreria Immagini Irregolare'
              )
          )
        //----------------------
        //-- Full Width Slide --
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => 'full_w_slide_field'
          //,'label' => __('Slide + Testo a DX', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'file'
                  ,'field' => 'upload_media'
                  ,'label' => 'Add File(s)'
                  ,'description' => 'This is the media uploader'
                  ,'options' => array(
                  'modal_title' => 'Add File(s)'
                  ,'button' => 'Add'
                  )
              )
          )
          ,'conditions' => array(
            array(
              'field' => 'module_group:module_select'
              ,'value' => 'full_w_slide'
            )
          )
      )

        //----------------------
        //- Slide + Testo a DX -
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => 'slide_text_dx_field'
          //,'label' => __('Slide + Testo a DX', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h3)',
                  'columns' => '6',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'file'
                  ,'field' => 'upload_media'
                  ,'label' => 'Add File(s)'
                  ,'description' => 'This is the media uploader'
                  ,'columns' => '6'
                  ,'options' => array(
                  'modal_title' => 'Add File(s)'
                  ,'button' => 'Add'
                  )
              )
              ,array(
                  'type' => 'editor',
                  'field' => 'my_textarea',
                  'label' => 'Text Area',
                  'columns' => '6',
                  'attributes' => array(
                      'rows' => 10,
                      'cols' => 50,
                      'class' => 'alignright'
                  )

                )
              )
            ,'conditions' => array(
        array(
          'field' => 'module_group:module_select'
          ,'value' => 'slide_text_dx'
        )
      )
    )

        //----------------------
        //- Testo a SX + Slide -
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => 'slide_text_sx_field'
          //,'label' => __('Testo a SX + Slide', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'columns' => '6',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h3)',
                  'columns' => '6',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'file'
                  ,'field' => 'upload_media'
                  ,'label' => 'Add File(s)'
                  ,'description' => 'This is the media uploader'
                  ,'columns' => '6'
                  ,'options' => array(
                  'modal_title' => 'Add File(s)'
                  ,'button' => 'Add'
                  )
              )
              ,array(
                  'type' => 'editor',
                  'field' => 'my_textarea',
                  'label' => 'Text Area',
                  'columns' => '6',
                  'attributes' => array(
                      'rows' => 10,
                      'cols' => 50,
                      'class' => 'alignright'
                  )
              )
              
          )
          ,'conditions' => array(
            array(
              'field' => 'module_group:module_select'
              ,'value' => 'slide_text_sx'
            )
          )
      )

        //----------------------
        //--- 3 Column Text ----
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => '3_column_text_field'
          //,'label' => __('Slide + Testo a DX', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'attributes' => array(
                    'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'text',
                  'field' => 'titolo_col_1',
                  'label' => 'Titolo Colonna 1 (h3)',
                  'columns' => 4,
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'text',
                  'field' => 'titolo_col_2',
                  'label' => 'Titolo Colonna 2 (h3)',
                  'columns' => 4,
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'text',
                  'field' => 'titolo_col_3',
                  'label' => 'Titolo Colonna 3 (h3)',
                  'columns' => 4,
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'editor',
                  'field' => 'testo_col_1',
                  'label' => 'Testo Colonna 1',
                  'columns' => 4,
                  'attributes' => array(
                      'rows' => 7,
                      'cols' => 50,
                      'class' => 'large-text'
                  )
              )
              ,array(
                  'type' => 'editor',
                  'field' => 'testo_col_2',
                  'label' => 'Testo Colonna 2',
                  'columns' => 4,
                  'attributes' => array(
                      'rows' => 7,
                      'cols' => 50,
                      'class' => 'large-text'
                  )
              )
              ,array(
                  'type' => 'editor',
                  'field' => 'testo_col_3',
                  'label' => 'Testo Colonna 3',
                  'columns' => 4,
                  'attributes' => array(
                      'rows' => 7,
                      'cols' => 50,
                      'class' => 'large-text'
                  )
              )
          )
          ,'conditions' => array(
            array(
              'field' => 'module_group:module_select'
              ,'value' => '3_column_text'
            )
          )
      )

        //----------------------
        //-- Quadreria Immagini --
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => 'quadreria_img_field'
          //,'label' => __('Slide + Testo a DX', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'file'
                  ,'field' => 'upload_media'
                  ,'label' => 'Add File(s)'
                  ,'description' => 'This is the media uploader'
                  ,'options' => array(
                  'modal_title' => 'Add File(s)'
                  ,'button' => 'Add'
                  )
              )
          )
          ,'conditions' => array(
            array(
              'field' => 'module_group:module_select'
              ,'value' => 'quadreria_img'
            )
          )
      )

        //----------------------
        //-- Quadreria Immagini Irregolare --
        //----------------------
        ,array(
          'type' => 'group'
          ,'field' => 'quadreria_img_irreg_field'
          //,'label' => __('Slide + Testo a DX', 'mph')
          ,'list' => false
          ,'description' => __('A grouped field with a key set. Data is not searchable, since it is saved in an array.', 'piklist-demo')
          ,'fields' => array(
              array(
                  'type' => 'text',
                  'field' => 'titolo',
                  'label' => 'Titolo (h2)',
                  'attributes' => array(
                  'class' => 'large-text' // WordPress css class 
                  )
              )
              ,array(
                  'type' => 'file'
                  ,'field' => 'upload_media'
                  ,'label' => 'Add File(s)'
                  ,'description' => 'This is the media uploader'
                  ,'options' => array(
                  'modal_title' => 'Add File(s)'
                  ,'button' => 'Add'
                  )
              )
          )
          ,'conditions' => array(
            array(
              'field' => 'module_group:module_select'
              ,'value' => 'quadreria_img_irreg'
            )
          )
      )

    )
  )
);

Some tips to improve or optimize?
I have to change approach?

Thanks`