долго грузится сайт на opencart

<?xml version="1.0" encoding="utf-8"?>
<modification>
    <code>perfomence checker ttfb</code>
    <name>perfomence checker ttfb</name>
    <version>1</version>
    <author>kj</author>
    <link>cleanphp.pp.ua</link>
       <file path="system/engine/{router,front}.php">
        <operation error="skip">
            <search>
                <![CDATA[$action = $this->execute($action);]]>
            </search>
            <add position="after" offset = "1">
                <![CDATA[
                $this->user = new Cart\User($this->registry);

               if (strpos($_SERVER['REQUEST_URI'], "/admin/") !== false || !$this->user->isLogged() || !isset(Action::$timings)) {
                         return;
               }

                $maxtime = 200;
                echo "<button id='toggle-info-btn' class='btn btn-primary btn-sm fixed-top-right'><i class=\"fa fa-cog fa-spin\"></i> </button>";
                echo "<div id='info-panel' class='hidden'>";
                echo "<div class='ttfbperf-container row'>"; 
                foreach(Action::$timings as $key => $arr)
                {
                    uasort($arr, function($a, $b) {
                        return $b['time'] <=> $a['time']; // Изменено: $b['time'] <=> $a['time']
                    });
                        
                    echo "<div class='col-md-3'>"; 
                    echo "<table class='ttfbperf-table table table-bordered table-striped'>";
                    echo "<thead style='font-size: 14px;'>";
                    echo "<tr>";
                    echo "<th>".$key."</th>";
                    echo "<th>time</th>";
                    echo "<th>count</th>";
                    echo "</tr>";
                    echo "</thead>";
                    echo "<tbody style='font-size: 12px;'>";

                    foreach($arr as $key2 => $val)
                    {
                        $percent = $val['time']/$maxtime;
                        $R = round(255 * $percent);
                        $G = 255 - $R; 
                        $bgccc = "rgba(".$R.", ".$G.", 0, 0.5)";

                        echo "<tr style='background-color: $bgccc;'>";
                        echo "<td>" . $key2 . "</td>";
                        echo "<td>" . number_format($val['time'], 1) . " ms</td>";
                        echo "<td>" . $val['count'] . "</td>";
                        echo "</tr>";
                    }
                    echo "</tbody>";
                    echo "</table>";
                    echo "</div>"; 
                }
                echo "</div>"; 
                echo "</div>";
                echo "<script>
                    document.getElementById('toggle-info-btn').addEventListener('click', function() {
                        var panel = document.getElementById('info-panel');
                        if (panel.classList.contains('hidden')) {
                            panel.classList.remove('hidden');
                        } else {
                            panel.classList.add('hidden');
                        }
                    });
                </script>
                <style>
                    .fixed-top-right { position: fixed; top: 10px; right: 10px; z-index: 1000; }
                    .hidden { display: none; }
                    .ttfbperf-container { display: flex; flex-wrap: wrap; } 
                    .ttfbperf-table { margin: 5px; box-sizing: border-box; }
                    .clearfix::after { content: ''; display: table; clear: both; }
                </style>";
                ]]>
            </add>
        </operation>
    </file>

    <file path="system/engine/action.php">
        <operation error="skip">
            <search>
                <![CDATA[return call_user_func_array(array($controller, $this->method), $args);]]>
            </search>
            <add position="replace">
            <![CDATA[
                $time_start = microtime(true);
                $res = call_user_func_array(array($controller, $this->method), $args);
                
                if(isset(Action::$timings)) 
                {
                    $time_end = microtime(true);
                    $diff = ($time_end - $time_start) * 1000;
                    $parts = explode("/", $this->route);
                    array_pop($parts);
                    $newroute = implode("/", $parts);

                    if(!isset(Action::$timings[$newroute][$this->route]))
                    {
                        Action::$timings[$newroute][$this->route]['time'] = 0;
                        Action::$timings[$newroute][$this->route]['count'] = 0;
                    }

                    Action::$timings[$newroute][$this->route]['time'] += $diff;
                    Action::$timings[$newroute][$this->route]['count']++;
                }

                return $res;
                ]]>
            </add>
        </operation>
            
        <operation error="skip">
            <search>
                <![CDATA[private $id;]]>
            </search>
            <add position="after">
              <![CDATA[public static $timings = [];]]>
            </add>
        </operation>
    </file>
</modification>