diff --git a/src/.env.example b/src/.env.example
--- a/src/.env.example
+++ b/src/.env.example
@@ -16,6 +16,7 @@
 SUPPORT_EMAIL=
 
 LOG_CHANNEL=stack
+LOG_SLOW_REQUESTS=5
 
 DB_CONNECTION=mysql
 DB_DATABASE=kolabdev
diff --git a/src/app/Http/Middleware/RequestLogger.php b/src/app/Http/Middleware/RequestLogger.php
--- a/src/app/Http/Middleware/RequestLogger.php
+++ b/src/app/Http/Middleware/RequestLogger.php
@@ -26,6 +26,13 @@
             $time = microtime(true) - self::$start;
 
             \Log::debug(sprintf("C: %s %s [%sM]: %.4f sec.", $method, $url, $mem, $time));
+        } else {
+            $threshold = \config('logging.slow_log');
+            if ($threshold && ($time = microtime(true) - self::$start) > $threshold) {
+                $url = $request->fullUrl();
+                $method = $request->getMethod();
+                \Log::warning(sprintf("[STATS] %s %s: %.4f sec.", $method, $url, $time));
+            }
         }
     }
 }
diff --git a/src/app/OpenVidu/Room.php b/src/app/OpenVidu/Room.php
--- a/src/app/OpenVidu/Room.php
+++ b/src/app/OpenVidu/Room.php
@@ -58,7 +58,15 @@
                     'auth' => [
                         \config('openvidu.api_username'),
                         \config('openvidu.api_password')
-                    ]
+                    ],
+                    'on_stats' => function (\GuzzleHttp\TransferStats $stats) {
+                        $threshold = \config('logging.slow_log');
+                        if ($threshold && ($sec = $stats->getTransferTime()) > $threshold) {
+                            $url = $stats->getEffectiveUri();
+                            $method = $stats->getRequest()->getMethod();
+                            \Log::warning(sprintf("[STATS] %s %s: %.4f sec.", $method, $url, $sec));
+                        }
+                    },
                 ]
             );
         }
diff --git a/src/config/logging.php b/src/config/logging.php
--- a/src/config/logging.php
+++ b/src/config/logging.php
@@ -91,4 +91,6 @@
         ],
     ],
 
+    'slow_log' => (float) env('LOG_SLOW_REQUESTS', 5),
+
 ];