diff --git a/change_log.txt b/change_log.txt
index 6ffee78e..440829fe 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,6 +1,7 @@
  ===== 3.1.22-dev ===== (xx.xx.2015)
  07.05.2015
   - improvement of the debugging console. Read NEW_FEATURES.txt
+  - optimization of resource class loading
 
  06.05.2015
   - bugfix in 3.1.22-dev cache resource must not be loaded for subtemplates
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 98e99abc..e87f6d8d 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -111,7 +111,7 @@ class Smarty extends Smarty_Internal_TemplateBase
     /**
      * smarty version
      */
-    const SMARTY_VERSION = '3.1.22-dev/29';
+    const SMARTY_VERSION = '3.1.22-dev/30';
 
     /**
      * define variable scopes
diff --git a/libs/sysplugins/smarty_internal_template.php b/libs/sysplugins/smarty_internal_template.php
index f2f42372..1f1a81ea 100644
--- a/libs/sysplugins/smarty_internal_template.php
+++ b/libs/sysplugins/smarty_internal_template.php
@@ -226,7 +226,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
         $isCacheTpl = $this->caching == Smarty::CACHING_LIFETIME_CURRENT || $this->caching == Smarty::CACHING_LIFETIME_SAVED;
         if ($isCacheTpl) {
             if (!isset($this->cached)) {
-                $this->cached = Smarty_Template_Cached::load($this);
+                $this->loadCached();
             }
             $this->cached->isCached($this, true);
         }
@@ -241,7 +241,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
             if (!$this->source->uncompiled) {
                 // render compiled code
                 if (!isset($this->compiled)) {
-                    $this->compiled = Smarty_Template_Compiled::load($this);
+                    $this->loadCompiled();
                 }
                 $content = $this->compiled->render($this);
             } else {
@@ -790,6 +790,45 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
         }
     }
 
+    /**
+     * Load compiled object
+     *
+     */
+    public function loadCompiled()
+    {
+        if (!isset($this->compiled)) {
+            if (!class_exists('Smarty_Template_Compiled', false)) {
+                require SMARTY_SYSPLUGINS_DIR . 'smarty_template_compiled.php';
+            }
+            $this->compiled = Smarty_Template_Compiled::load($this);
+        }
+    }
+
+    /**
+     * Load cached object
+     *
+     */
+    public function loadCached()
+    {
+        if (!isset($this->cached)) {
+            if (!class_exists('Smarty_Template_Cached', false)) {
+                require SMARTY_SYSPLUGINS_DIR . 'smarty_template_cached.php';
+            }
+            $this->cached = Smarty_Template_Cached::load($this);
+        }
+    }
+
+    /**
+     * Load compiler object
+     *
+     * @throws \SmartyException
+     */
+    public function loadCompiler()
+    {
+        $this->smarty->loadPlugin($this->source->compiler_class);
+        $this->compiler = new $this->source->compiler_class($this->source->template_lexer_class, $this->source->template_parser_class, $this->smarty);
+    }
+
     /**
      * Handle unknown class methods
      *
@@ -824,18 +863,14 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
             case 'cached':
             case 'compiler':
                 $this->$property_name = $value;
-
                 return;
-
-            // FIXME: routing of template -> smarty attributes
             default:
+                // Smarty property ?
                 if (property_exists($this->smarty, $property_name)) {
                     $this->smarty->$property_name = $value;
-
                     return;
                 }
         }
-
         throw new SmartyException("invalid template property '$property_name'.");
     }
 
@@ -855,26 +890,22 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
                 return $this->source;
 
             case 'compiled':
-                $this->compiled = Smarty_Template_Compiled::load($this);
+                $this->loadCompiled();
                 return $this->compiled;
 
             case 'cached':
-                $this->cached = Smarty_Template_Cached::load($this);
+                $this->loadCached();
                 return $this->cached;
 
             case 'compiler':
-                $this->smarty->loadPlugin($this->source->compiler_class);
-                $this->compiler = new $this->source->compiler_class($this->source->template_lexer_class, $this->source->template_parser_class, $this->smarty);
-
+                $this->loadCompiler();
                 return $this->compiler;
-
-            // FIXME: routing of template -> smarty attributes
-            default:
+           default:
+               // Smarty property ?
                 if (property_exists($this->smarty, $property_name)) {
                     return $this->smarty->$property_name;
                 }
         }
-
         throw new SmartyException("template property '$property_name' does not exist.");
     }
 
diff --git a/libs/sysplugins/smarty_internal_templatebase.php b/libs/sysplugins/smarty_internal_templatebase.php
index b629aedc..68fd4be2 100644
--- a/libs/sysplugins/smarty_internal_templatebase.php
+++ b/libs/sysplugins/smarty_internal_templatebase.php
@@ -67,6 +67,9 @@ abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data
             }
         }
         // return cache status of template
+        if (!isset($template->cached)) {
+            $template->loadCached();
+        }
         return $template->cached->isCached($template);
     }
 
diff --git a/libs/sysplugins/smarty_template_cached.php b/libs/sysplugins/smarty_template_cached.php
index ae8a329a..44af74c1 100644
--- a/libs/sysplugins/smarty_template_cached.php
+++ b/libs/sysplugins/smarty_template_cached.php
@@ -109,7 +109,13 @@ class Smarty_Template_Cached
     {
         $this->compile_id = $_template->compile_id;
         $this->cache_id = $_template->cache_id;
+        if (!isset($_template->source)) {
+            $_template->loadSource();
+        }
         $this->source = $_template->source;
+        if (!class_exists('Smarty_CacheResource', false)) {
+            require SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
+        }
         $this->handler = Smarty_CacheResource::load($_template->smarty);
     }
 
diff --git a/libs/sysplugins/smarty_template_compiled.php b/libs/sysplugins/smarty_template_compiled.php
index 8776a091..8147ac0b 100644
--- a/libs/sysplugins/smarty_template_compiled.php
+++ b/libs/sysplugins/smarty_template_compiled.php
@@ -62,6 +62,9 @@ class Smarty_Template_Compiled
      */
     static function load($_template)
     {
+        if (!isset($_template->source)) {
+            $_template->loadSource();
+        }
         // check runtime cache
         if (!$_template->source->recompiled && $_template->smarty->resource_caching) {
             $_cache_key = $_template->source->unique_resource . '#';