diff --git a/git-teaspeak b/git-teaspeak
index 4c4c216..93ac500 160000
--- a/git-teaspeak
+++ b/git-teaspeak
@@ -1 +1 @@
-Subproject commit 4c4c2161722469fffebc5dbb0411af884d3b709e
+Subproject commit 93ac5008175a2925d8031ab04555913fe97e9baf
diff --git a/rtclib b/rtclib
index c65d26c..f6b0368 160000
--- a/rtclib
+++ b/rtclib
@@ -1 +1 @@
-Subproject commit c65d26c58c82dbdd2091a9ba53eb83a249fd189f
+Subproject commit f6b03688f0f80803f182fdaab7d645f4f7633bdf
diff --git a/server/lock_concept b/server/lock_concept
index f258142..13d33d0 100644
--- a/server/lock_concept
+++ b/server/lock_concept
@@ -1,3 +1,9 @@
+Locking Order:
+Channel Tree:
+1. Server Channel Tree
+2. Client Channel Tree
+
+
 CommandResult handleCommandClientUpdate(Command&);
 CommandResult handleCommandClientEdit(Command&);
 CommandResult handleCommandClientEdit(Command&, const std::shared_ptr<ConnectedClient>& /* target */);
@@ -55,4 +61,4 @@ Move client acts like access server channel tree: write lock channel_tree_lock =
 TODO: Some kind of perm channel lock
 TODO: Fix handleCommandChannelEdit
 
-Test: Channel hide & show with clients! Multible clients as well!
\ No newline at end of file
+Test: Channel hide & show with clients! Multiple clients as well!
\ No newline at end of file
diff --git a/server/src/client/SpeakingClient.cpp b/server/src/client/SpeakingClient.cpp
index 55d4094..68c8671 100644
--- a/server/src/client/SpeakingClient.cpp
+++ b/server/src/client/SpeakingClient.cpp
@@ -100,18 +100,26 @@ command_result SpeakingClient::handleCommandClientInit(Command& cmd) {
 
     {
         lock_guard<threads::Mutex> lock(this->server->join_attempts_lock);
-        auto inetAddr = this->getPeerIp();
-        if(config::voice::clientConnectLimit > 0 && this->server->join_attempts[inetAddr] + 1 > config::voice::clientConnectLimit)
+        auto client_address = this->getPeerIp();
+        auto& client_join_attempts = this->server->join_attempts[client_address];
+        auto& general_join_attempts = this->server->join_attempts["_"];
+
+        if(config::voice::clientConnectLimit > 0 && client_join_attempts + 1 > config::voice::clientConnectLimit) {
             return command_result{error::client_join_rate_limit_reached};
-        if(config::voice::connectLimit > 0 && this->server->join_attempts["_"] + 1 > config::voice::connectLimit)
+        }
+
+        if(config::voice::connectLimit > 0 && general_join_attempts + 1 > config::voice::connectLimit) {
             return command_result{error::server_join_rate_limit_reached};
-        this->server->join_attempts[inetAddr]++;
-        this->server->join_attempts["_"]++;
+        }
+
+        client_join_attempts++;
+        general_join_attempts++;
     }
     TIMING_STEP(timings, "join atmp c");
 
-    if(!DatabaseHelper::assignDatabaseId(this->server->getSql(), this->server->getServerId(), _this.lock()))
+    if(!DatabaseHelper::assignDatabaseId(this->server->getSql(), this->server->getServerId(), _this.lock())) {
         return command_result{error::vs_critical, "Could not assign database id!"};
+    }
 
     TIMING_STEP(timings, "db assign  ");
     this->server->getGroupManager()->enableCache(this->getClientDatabaseId());
diff --git a/server/src/client/voice/PacketEncoder.cpp b/server/src/client/voice/PacketEncoder.cpp
index 958af42..f0b1acd 100644
--- a/server/src/client/voice/PacketEncoder.cpp
+++ b/server/src/client/voice/PacketEncoder.cpp
@@ -94,9 +94,9 @@ void PacketEncoder::send_packet_acknowledge(uint16_t pid, bool low) {
 
 
 #define MAX_COMMAND_PACKET_PAYLOAD_LENGTH (487)
-void PacketEncoder::send_command(const std::string_view &command, bool low, std::unique_ptr<threads::Future<bool>> ack_listener) {
+void PacketEncoder::send_command(const std::string_view &command, bool low, std::unique_ptr<std::function<void(bool)>> ack_listener) {
     bool own_data_buffer{false};
-    void* own_data_buffer_ptr; /* imutable! */
+    void* own_data_buffer_ptr; /* immutable! */
 
     const char* data_buffer{command.data()};
     size_t data_length{command.length()};
diff --git a/server/src/client/voice/PacketEncoder.h b/server/src/client/voice/PacketEncoder.h
index 23674f7..8517430 100644
--- a/server/src/client/voice/PacketEncoder.h
+++ b/server/src/client/voice/PacketEncoder.h
@@ -44,7 +44,7 @@ namespace ts::server::server::udp {
 
             void send_packet(protocol::OutgoingServerPacket* /* packet */); /* will claim ownership */
             void send_packet(protocol::PacketType /* type */, protocol::PacketFlag::PacketFlags /* flags */, const void* /* payload */, size_t /* payload length */);
-            void send_command(const std::string_view& /* build command command */, bool /* command low */, std::unique_ptr<threads::Future<bool>> /* acknowledge listener */);
+            void send_command(const std::string_view& /* build command command */, bool /* command low */, std::unique_ptr<std::function<void(bool)>> /* acknowledge listener */);
 
             void send_packet_acknowledge(uint16_t /* packet id */, bool /* acknowledge low */);
 
diff --git a/server/src/client/voice/VoiceClient.cpp b/server/src/client/voice/VoiceClient.cpp
index 0f2da0a..3b09e21 100644
--- a/server/src/client/voice/VoiceClient.cpp
+++ b/server/src/client/voice/VoiceClient.cpp
@@ -59,7 +59,7 @@ VoiceClient::~VoiceClient() {
     memtrack::freed<VoiceClient>(this);
 }
 
-void VoiceClient::sendCommand0(const std::string_view& cmd, bool low, std::unique_ptr<threads::Future<bool>> listener) {
+void VoiceClient::sendCommand0(const std::string_view& cmd, bool low, std::unique_ptr<std::function<void(bool)>> listener) {
     this->connection->send_command(cmd, low, std::move(listener));
 
 #ifdef PKT_LOG_CMD
@@ -146,21 +146,22 @@ bool VoiceClient::disconnect(ts::ViewReasonId reason_id, const std::string &reas
             this->currentChannel = nullptr;
         }
 
-        auto listener = make_unique<threads::Future<bool>>();
         auto weak_self = this->_this;
-        listener->waitAndGetLater([weak_self](bool* success) {
-            if(weak_self.expired()) return;
+        this->sendCommand0(cmd.build(), false, std::make_unique<std::function<void(bool)>>([weak_self](bool success) {
             auto self = weak_self.lock();
-            if(!self) return;
+            if(!self) {
+                return;
+            }
 
-            if(!success || !*success) {
+            if(!success) {
+                /* In theory we have no need to disconnect the client any more since a failed acknowledge would do the trick for us */
                 debugMessage(self->getServerId(), "{} Failed to receive disconnect acknowledge!", CLIENT_STR_LOG_PREFIX_(self));
-            } else
+            } else {
                 debugMessage(self->getServerId(), "{} Received disconnect acknowledge!", CLIENT_STR_LOG_PREFIX_(self));
+            }
 
             self->close_connection(chrono::system_clock::time_point{}); /* we received the ack, we do not need to flush anything */
-        }, system_clock::now() + seconds(5));
-        this->sendCommand0(cmd.build(), false, std::move(listener));
+        }));
     } else {
         //TODO: Extra case for INIT_HIGH?
         this->close_connection(chrono::system_clock::now() + chrono::seconds{5});
diff --git a/server/src/client/voice/VoiceClient.h b/server/src/client/voice/VoiceClient.h
index 561d212..4753928 100644
--- a/server/src/client/voice/VoiceClient.h
+++ b/server/src/client/voice/VoiceClient.h
@@ -65,11 +65,11 @@ namespace ts {
                 bool disconnect(const std::string&) override;
                 bool disconnect(ViewReasonId /* reason type */, const std::string& /* reason */, const std::shared_ptr<ts::server::ConnectedClient>& /* invoker */, bool /* notify viewer */);
 
-                void sendCommand(const ts::Command &command, bool low = false) override { return this->sendCommand0(command.build(), low); }
-                void sendCommand(const ts::command_builder &command, bool low) override { return this->sendCommand0(command.build(), low); }
+                void sendCommand(const ts::Command &command, bool low = false) override { return this->sendCommand0(command.build(), low, nullptr); }
+                void sendCommand(const ts::command_builder &command, bool low) override { return this->sendCommand0(command.build(), low, nullptr); }
 
                 /* Note: Order is only guaranteed if progressDirectly is on! */
-                virtual void sendCommand0(const std::string_view& /* data */, bool low = false, std::unique_ptr<threads::Future<bool>> listener = nullptr);
+                virtual void sendCommand0(const std::string_view& /* data */, bool low, std::unique_ptr<std::function<void(bool)>> listener);
 
                 connection::VoiceClientConnection* getConnection(){ return connection; }
                 std::shared_ptr<VoiceServer> getVoiceServer(){ return voice_server; }
diff --git a/server/src/client/voice/VoiceClientConnection.cpp b/server/src/client/voice/VoiceClientConnection.cpp
index fbaa957..8a754f7 100644
--- a/server/src/client/voice/VoiceClientConnection.cpp
+++ b/server/src/client/voice/VoiceClientConnection.cpp
@@ -230,7 +230,7 @@ void VoiceClientConnection::send_packet(protocol::OutgoingServerPacket* packet)
     this->packet_encoder_.send_packet(packet);
 }
 
-void VoiceClientConnection::send_command(const std::string_view &cmd, bool b, std::unique_ptr<threads::Future<bool>> cb) {
+void VoiceClientConnection::send_command(const std::string_view &cmd, bool b, std::unique_ptr<std::function<void(bool)>> cb) {
     this->packet_encoder_.send_command(cmd, b, std::move(cb));
 }
 
diff --git a/server/src/client/voice/VoiceClientConnection.h b/server/src/client/voice/VoiceClientConnection.h
index f17e001..1712d60 100644
--- a/server/src/client/voice/VoiceClientConnection.h
+++ b/server/src/client/voice/VoiceClientConnection.h
@@ -58,7 +58,7 @@ namespace ts {
 
                 void send_packet(protocol::PacketType /* type */, protocol::PacketFlag::PacketFlags /* flags */, const void* /* payload */, size_t /* payload length */);
                 void send_packet(protocol::OutgoingServerPacket* /* packet */); /* method takes ownership of the packet */
-                void send_command(const std::string_view& /* build command command */, bool /* command low */, std::unique_ptr<threads::Future<bool>> /* acknowledge listener */);
+                void send_command(const std::string_view& /* build command command */, bool /* command low */, std::unique_ptr<std::function<void(bool)>> /* acknowledge listener */);
 
                 CryptHandler* getCryptHandler(){ return &crypt_handler; }
 
diff --git a/shared b/shared
index c1085c8..c079098 160000
--- a/shared
+++ b/shared
@@ -1 +1 @@
-Subproject commit c1085c84cfa24921587c19cb3a2d5e1864473025
+Subproject commit c0790984eeea45c2692680fd133e6048cbafe57c