到wordpress資料夾內找wp-admin/includes/class-wp-posts-list-table.php
然後在第88行應該會看到
$this->user_posts_count = intval( $wpdb->get_var( $wpdb->prepare( "
SELECT COUNT( 1 )
FROM $wpdb->posts
WHERE post_type = %s
AND post_status NOT IN ( '" . implode( "','", $exclude_states ) . "' )
AND post_author = %d
", $post_type, get_current_user_id() ) ) );
把以上這段都刪除，或者在前面加上// (也就是remark的意思)
再回去後台點點看，應該整體速度都明顯有加快了
PS: 當然最安全的做法還是先把這個檔案備份一次再修改