diff --git a/src/TTCPServer.cpp b/src/TTCPServer.cpp
index 814b00a..e4b9a20 100644
--- a/src/TTCPServer.cpp
+++ b/src/TTCPServer.cpp
@@ -104,6 +104,12 @@ void TTCPServer::Authentication(SOCKET TCPSock) {
         return;
     }
 
+    if (!AuthResponse.IsObject()) {
+        ClientKick(*Client, "Backend returned invalid auth response format.");
+        error("Backend returned invalid auth response format. This should never happen.");
+        return;
+    }
+
     if (AuthResponse["username"].IsString() && AuthResponse["roles"].IsString()
         && AuthResponse["guest"].IsBool() && AuthResponse["identifiers"].IsArray()) {
 
@@ -166,7 +172,6 @@ bool TTCPServer::TCPSend(TClient& c, const std::string& Data, bool IsSync) {
             c.EnqueueMissedPacketDuringSyncing(Data);
             return true;
         } else if (!c.IsSyncing() && c.IsSynced() && c.MissedPacketQueueSize() != 0) {
-            std::this_thread::sleep_for(std::chrono::seconds(1));
             while (c.MissedPacketQueueSize() > 0) {
                 std::string QData = c.MissedPacketQueue().front();
                 c.MissedPacketQueue().pop();
diff --git a/src/TUDPServer.cpp b/src/TUDPServer.cpp
index 7f3ccca..1217062 100644
--- a/src/TUDPServer.cpp
+++ b/src/TUDPServer.cpp
@@ -97,7 +97,7 @@ void TUDPServer::SendToAll(TClient* c, const std::string& Data, bool Self, bool
         if (!ClientPtr.expired()) {
             auto Client = ClientPtr.lock();
             if (Self || Client.get() != c) {
-                if (Client->IsSynced()) {
+                if (Client->IsSynced() || Client->IsSyncing()) {
                     if (Rel || C == 'W' || C == 'Y' || C == 'V' || C == 'E') {
                         if (C == 'O' || C == 'T' || Data.length() > 1000)
                             mTCPServer.SendLarge(*Client, Data);