diff --git a/gumble/gumble/udp15.go b/gumble/gumble/udp15.go
index d7cd001..3cde238 100644
--- a/gumble/gumble/udp15.go
+++ b/gumble/gumble/udp15.go
@@ -452,7 +452,10 @@ func (c *Client) WriteAudioUDP15(data []byte, final bool) (bool, error) {
 	if cs == nil || !cs.initialized {
 		return false, nil
 	}
-	if c.udpConn == nil {
+
+	// Snapshot udpConn to avoid race with disconnect cleanup nil'ing it.
+	udpConn := c.udpConn
+	if udpConn == nil {
 		return false, nil
 	}
 
@@ -461,9 +464,6 @@ func (c *Client) WriteAudioUDP15(data []byte, final bool) (bool, error) {
 	// Build MumbleUDP.Audio protobuf.
 	payload := encodeUDPAudio(0, frameNum, data, final)
 
-	log.Info("UDP15 send: frame=%d opus_len=%d proto_len=%d final=%v",
-		frameNum, len(data), len(payload), final)
-
 	// Encrypt with 1.5 format.
 	encrypted, err := cs.encrypt15(payload)
 	if err != nil {
@@ -471,10 +471,10 @@ func (c *Client) WriteAudioUDP15(data []byte, final bool) (bool, error) {
 		return false, err
 	}
 
-	log.Info("UDP15 send: encrypted_len=%d hex=%s",
-		len(encrypted), hex.EncodeToString(encrypted))
+	log.Debug("UDP15 send: frame=%d opus_len=%d enc_len=%d final=%v",
+		frameNum, len(data), len(encrypted), final)
 
-	_, err = c.udpConn.Write(encrypted)
+	_, err = udpConn.Write(encrypted)
 	if err != nil {
 		log.Error("UDP15 send write failed: %v", err)
 		return false, err
@@ -483,13 +483,18 @@ func (c *Client) WriteAudioUDP15(data []byte, final bool) (bool, error) {
 }
 
 // HandleUDPPacket15 processes an incoming Mumble 1.5 native UDP packet.
+var firstUDP15Recv bool
+
 func (c *Client) HandleUDPPacket15(packet []byte, pktNum uint64) {
 	if len(packet) < udp15HeaderSize {
 		log.Warn("UDP15 #%d: packet too short (%d bytes)", pktNum, len(packet))
 		return
 	}
 
-	log.Info("UDP15 #%d: raw hex=%s", pktNum, hex.EncodeToString(packet))
+	if !firstUDP15Recv {
+		firstUDP15Recv = true
+		log.Info("UDP15 #%d: first packet received! hex=%s", pktNum, hex.EncodeToString(packet))
+	}
 
 	cs := udp15Server
 	if cs == nil || !cs.initialized {
@@ -503,14 +508,11 @@ func (c *Client) HandleUDPPacket15(packet []byte, pktNum uint64) {
 		return
 	}
 
-	log.Info("UDP15 #%d: decrypt OK, plaintext hex=%s", pktNum, hex.EncodeToString(plaintext))
+	log.Debug("UDP15 #%d: decrypt OK, plaintext_len=%d", pktNum, len(plaintext))
 
 	// Parse MumbleUDP.Audio protobuf.
 	session, frameNum, opusData, terminator := decodeUDPAudio(plaintext)
 
-	log.Info("UDP15 #%d: session=%d frame=%d opus_len=%d term=%v",
-		pktNum, session, frameNum, len(opusData), terminator)
-
 	if len(opusData) == 0 && !terminator {
 		return
 	}