diff --git a/tasmota/tasmota_support/support_device_groups.ino b/tasmota/tasmota_support/support_device_groups.ino
index 699db3911..63b9eb965 100644
--- a/tasmota/tasmota_support/support_device_groups.ino
+++ b/tasmota/tasmota_support/support_device_groups.ino
@@ -208,6 +208,9 @@ void DeviceGroupsStart()
 void DeviceGroupsStop()
 {
   device_groups_udp.flush();
+#ifdef ESP32
+  device_groups_udp.clear();   // New with core3. Does what flush() did in core2;
+#endif
   device_groups_up = false;
 }
 
diff --git a/tasmota/tasmota_xdrv_driver/xdrv_04_light_artnet.ino b/tasmota/tasmota_xdrv_driver/xdrv_04_light_artnet.ino
index d0d3b61ff..342c662f8 100644
--- a/tasmota/tasmota_xdrv_driver/xdrv_04_light_artnet.ino
+++ b/tasmota/tasmota_xdrv_driver/xdrv_04_light_artnet.ino
@@ -245,7 +245,8 @@ void ArtNetLoop(void)
       uint8_t packet_buffer[WS2812_ARTNET_UDP_BUFFER_SIZE];     // buffer to hold incoming UDP/SSDP packet
 
       packet_len = ArtNetUdp->read(packet_buffer, WS2812_ARTNET_UDP_BUFFER_SIZE);
-      ArtNetUdp->flush();   // Finish reading the current packet
+//      ArtNetUdp->flush();   // Finish reading the current packet
+      ArtNetUdp->clear();   // New with core3. Does what flush() did in core2;
 #endif
       // AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("UDP: Packet %*_H (%d)"), 32, packet_buffer, packet_len);
       if (artnet_conf.on) {
diff --git a/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino b/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino
index edc2a0d1a..b2316a0f3 100755
--- a/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino
+++ b/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino
@@ -1387,6 +1387,9 @@ int32_t udp_call(char *url, uint32_t port, char *sbuf) {
   udp.write((const uint8_t*)sbuf, strlen(sbuf));
   udp.endPacket();
   udp.flush();
+#ifdef ESP32
+  udp.clear();   // New with core3. Does what flush() did in core2;
+#endif
   udp.stop();
   return 0;
 }