diff --git a/usr/local/bin/custom/poe.sh b/usr/local/bin/custom/poe.sh
index 57fbe1b..e2f58b9 100644
--- a/usr/local/bin/custom/poe.sh
+++ b/usr/local/bin/custom/poe.sh
@@ -87,23 +87,45 @@ EOF
 
 echo "" > "$LOGFILE"
 
+MAX_PARALLEL=10  # maximal gleichzeitig laufende Geräte
+
 while true; do
     echo "--------------------------------------------------------------------" >> "$LOGFILE"
     python3 /srv/poe_manager/generate_ips.py | while IFS=: read -r rpi_ip dev_name switch_ip switch_hostname switch_port switch_user switch_pass; do
-        if ping -c 2 -W 1 "$rpi_ip" &> /dev/null; then
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist erreichbar!" >> "$LOGFILE"
-        else
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist nicht erreichbar!" >> "$LOGFILE"
+        # Funktion für ein Gerät
+        check_device() {
+            local rpi_ip="$1"
+            local dev_name="$2"
+            local switch_ip="$3"
+            local switch_hostname="$4"
+            local switch_port="$5"
+            local switch_user="$6"
+            local switch_pass="$7"
 
-            # Nur PoE neu starten, wenn Port vorhanden ist
-            if [ -n "$switch_port" ] && [ "$switch_port" != "None" ]; then
-                disable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
-                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname deaktiviert." >> "$LOGFILE"
-                sleep 2
-                enable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
-                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname aktiviert." >> "$LOGFILE"
+            if ping -c 4 -W 1 "$rpi_ip" &> /dev/null; then
+                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist erreichbar!" >> "$LOGFILE"
+            else
+                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist nicht erreichbar!" >> "$LOGFILE"
+
+                if [ -n "$switch_port" ] && [ "$switch_port" != "None" ]; then
+                    disable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
+                    echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname deaktiviert." >> "$LOGFILE"
+                    sleep 2
+                    enable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
+                    echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname aktiviert." >> "$LOGFILE"
+                fi
             fi
-        fi
+        }
+
+        # Job in Hintergrund starten
+        check_device "$rpi_ip" "$dev_name" "$switch_ip" "$switch_hostname" "$switch_port" "$switch_user" "$switch_pass" &
+        
+        # Limit auf MAX_PARALLEL Jobs
+        while [ "$(jobs -rp | wc -l)" -ge "$MAX_PARALLEL" ]; do
+            sleep 0.2
+        done
     done
+
+    wait  # alle Hintergrundjobs beenden, bevor sleep
     sleep "$SLEEP"
 done