diff --git a/quic/quicclient.go b/quic/quicclient.go
index 6b3ca77..fcd50ec 100644
--- a/quic/quicclient.go
+++ b/quic/quicclient.go
@@ -42,6 +42,7 @@ func StartClient(iFace *water.Interface, config config.Config) {
 func tunToQuic(config config.Config, stream quic.Stream, iFace *water.Interface) {
 	packet := make([]byte, config.BufferSize)
 	shb := make([]byte, 2)
+	defer stream.Close()
 	for {
 		shn, err := iFace.Read(packet)
 		if err != nil {
@@ -57,8 +58,9 @@ func tunToQuic(config config.Config, stream quic.Stream, iFace *water.Interface)
 		}
 		shb[0] = byte(shn >> 8 & 0xff)
 		shb[1] = byte(shn & 0xff)
-		b = append(shb, b...)
-		n, err := stream.Write(b)
+		copy(packet[len(shb):len(shb)+len(b)], b)
+		copy(packet[:len(shb)], shb)
+		n, err := stream.Write(packet[:len(shb)+len(b)])
 		if err != nil {
 			netutil.PrintErr(err, config.Verbose)
 			break
@@ -69,8 +71,9 @@ func tunToQuic(config config.Config, stream quic.Stream, iFace *water.Interface)
 
 // quicToTun sends packets from quic to tun
 func quicToTun(config config.Config, stream quic.Stream, iFace *water.Interface) {
-	var packet []byte
-	var shb = make([]byte, 2)
+	packet := make([]byte, config.BufferSize)
+	shb := make([]byte, 2)
+	defer stream.Close()
 	for {
 		n, err := stream.Read(shb)
 		if err != nil {
@@ -83,11 +86,10 @@ func quicToTun(config config.Config, stream quic.Stream, iFace *water.Interface)
 		shn := 0
 		shn = ((shn & 0x00) | int(shb[0])) << 8
 		shn = shn | int(shb[1])
-		packet = make([]byte, shn)
-		splitSize := 64
+		splitSize := 99
 		var count = 0
 		if shn < splitSize {
-			n, err = stream.Read(packet)
+			n, err = stream.Read(packet[:shn])
 			if err != nil {
 				netutil.PrintErr(err, config.Verbose)
 				break
@@ -99,13 +101,11 @@ func quicToTun(config config.Config, stream quic.Stream, iFace *water.Interface)
 				if shn-count < splitSize {
 					receiveSize = shn - count
 				}
-				buffer := make([]byte, receiveSize)
-				n, err = stream.Read(buffer)
+				n, err = stream.Read(packet[count : count+receiveSize])
 				if err != nil {
 					netutil.PrintErr(err, config.Verbose)
 					break
 				}
-				copy(packet[count:count+n], buffer[:n])
 				count += n
 			}
 		}
diff --git a/quic/quicserver.go b/quic/quicserver.go
index 1b3e2a0..689da27 100644
--- a/quic/quicserver.go
+++ b/quic/quicserver.go
@@ -75,8 +75,9 @@ func toClient(config config.Config, iFace *water.Interface) {
 					b = snappy.Encode(nil, b)
 				}
 				stream := v.(quic.Stream)
-				b = append(shb, b...)
-				n, err := stream.Write(b)
+				copy(packet[len(shb):len(shb)+len(b)], b)
+				copy(packet[:len(shb)], shb)
+				n, err := stream.Write(packet[:len(shb)+len(b)])
 				if err != nil {
 					netutil.PrintErr(err, config.Verbose)
 					break
@@ -89,8 +90,9 @@ func toClient(config config.Config, iFace *water.Interface) {
 
 // toServer sends packets from quicConn to iface
 func toServer(config config.Config, stream quic.Stream, iface *water.Interface) {
-	var packet []byte
+	packet := make([]byte, config.BufferSize)
 	shb := make([]byte, 2)
+	defer stream.Close()
 	for {
 		n, err := stream.Read(shb)
 		if err != nil {
@@ -98,13 +100,12 @@ func toServer(config config.Config, stream quic.Stream, iface *water.Interface)
 			break
 		}
 		if n < 2 {
-			continue
+			break
 		}
 		shn := 0
 		shn = ((shn & 0x00) | int(shb[0])) << 8
 		shn = shn | int(shb[1])
-		packet = make([]byte, shn)
-		n, err = stream.Read(packet)
+		n, err = stream.Read(packet[:shn])
 		if err == io.EOF || err != nil {
 			netutil.PrintErr(err, config.Verbose)
 			break