diff --git a/SQCSim-srv/connection.cpp b/SQCSim-srv/connection.cpp
index e742aad..f7beced 100644
--- a/SQCSim-srv/connection.cpp
+++ b/SQCSim-srv/connection.cpp
@@ -50,6 +50,7 @@ sockaddr_in* Connection::getAddr() const { return (sockaddr_in*)&m_addr; }
 void Connection::getPacks(SOCKET sock) {
 	std::vector<char*> lsPck;
 	Input in;
+	Sync sync;
 		lsPck = recvPacksFrom(sock, &m_buf, m_addr);
 
 		for (auto& pck : lsPck) {
@@ -62,6 +63,10 @@ void Connection::getPacks(SOCKET sock) {
 					m_input_vector.push_back(in);
 				}
 				break;
+			case SYNC:
+				if (Deserialize(&sync, pck, &bsize))
+					m_nsync = true;
+				break;
 			default: break;
 			}
 		}
diff --git a/SQCSim-srv/connection.h b/SQCSim-srv/connection.h
index 27f351c..e8136bd 100644
--- a/SQCSim-srv/connection.h
+++ b/SQCSim-srv/connection.h
@@ -39,6 +39,8 @@ public:
 	void Run(World* world);
 
 	void CleanInputManifest(Timestamp time);
+	
+	bool m_nsync = true;
 private:
 	std::unordered_map<Timestamp, Input> m_input_manifest;
 	std::vector<Input> m_input_vector;
diff --git a/SQCSim-srv/server.cpp b/SQCSim-srv/server.cpp
index 38c5299..a5a354f 100644
--- a/SQCSim-srv/server.cpp
+++ b/SQCSim-srv/server.cpp
@@ -200,28 +200,14 @@ void Server::Run() {
 		sync.timer = m_game.countdown;
 		sendPack<Sync>(conn->getSock(), &sync, &m_buf);
 	}
-	int clients_ready = 0;
-
-	while (clients_ready < players) {
-		Packet pck = getPack(&m_buf);
-		if (pck.type != PACKET_TYPE::SYNC) {
-			Log("Paquet invalide.", true, false);
-			if (pck.type != PACKET_TYPE::ERR)
-				netprot::emptyPack(pck);
-			continue;
-		}
-		Sync* sync = (Sync*)pck.ptr;
-		clients_ready++;
-		//m_players[sync->sid]
-		delete sync;
-	}
-
 
 	while (!endgame) {
 		for (auto& [key, conn] : m_players) {
 			conn->getPacks(m_sock_udp);
-			conn->Run(m_world);
-			conn->sendPacks(m_sock_udp, m_players);
+			if (conn->m_nsync) {
+				conn->Run(m_world);
+				conn->sendPacks(m_sock_udp, m_players);
+			}
 		}
 	}