diff --git a/matrix_puppeteer_line/portal.py b/matrix_puppeteer_line/portal.py
index d112378..da318c5 100644
--- a/matrix_puppeteer_line/portal.py
+++ b/matrix_puppeteer_line/portal.py
@@ -411,8 +411,6 @@ class Portal(DBPortal, BasePortal):
         max_mid = await DBMessage.get_max_mid(self.mxid) or 0
         messages = [msg for msg in await source.client.get_messages(self.chat_id)
                     if msg.id > max_mid]
-        # TODO Confirm why sorting in Node isn't enough
-        messages.sort(key=lambda message: message.id)
 
         if not messages:
             self.log.debug("Didn't get any entries from server")
diff --git a/matrix_puppeteer_line/rpc/client.py b/matrix_puppeteer_line/rpc/client.py
index eab9833..b919cde 100644
--- a/matrix_puppeteer_line/rpc/client.py
+++ b/matrix_puppeteer_line/rpc/client.py
@@ -35,6 +35,12 @@ class Client(RPCClient):
         await self.request("stop")
         await self.disconnect()
 
+    async def pause(self) -> None:
+        await self.request("pause")
+
+    async def resume(self) -> None:
+        await self.request("resume")
+
     async def get_chats(self) -> List[ChatListInfo]:
         resp = await self.request("get_chats")
         return [ChatListInfo.deserialize(data) for data in resp]
diff --git a/matrix_puppeteer_line/rpc/rpc.py b/matrix_puppeteer_line/rpc/rpc.py
index 1cd287f..6114f75 100644
--- a/matrix_puppeteer_line/rpc/rpc.py
+++ b/matrix_puppeteer_line/rpc/rpc.py
@@ -13,7 +13,7 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
-from typing import Dict, Any, Callable, Awaitable, List, Optional
+from typing import Dict, Any, Callable, Awaitable, List, Optional, Tuple
 import logging
 import asyncio
 import json
@@ -50,6 +50,8 @@ class RPCClient:
         self._response_waiters = {}
         self._writer = None
         self._reader = None
+        self._command_queue: List[Tuple[int, str, Dict[str, Any]]] = []
+        self._command_sem = asyncio.Semaphore(0)
 
     async def connect(self) -> None:
         if self._writer is not None:
@@ -65,6 +67,7 @@ class RPCClient:
         self._reader = r
         self._writer = w
         self.loop.create_task(self._try_read_loop())
+        self.loop.create_task(self._command_loop())
         await self.request("register", user_id=self.user_id)
 
     async def disconnect(self) -> None:
@@ -109,11 +112,16 @@ class RPCClient:
         try:
             req_id = req.pop("id")
             command = req.pop("command")
+            is_sequential = req.pop("is_sequential", False)
         except KeyError:
             self.log.debug(f"Got invalid request from server: {line}")
             return
         if req_id < 0:
-            self.loop.create_task(self._run_event_handler(req_id, command, req))
+            if not is_sequential:
+                self.loop.create_task(self._run_event_handler(req_id, command, req))
+            else:
+                self._command_queue.append((req_id, command, req))
+                self._command_sem.release()
             return
         try:
             waiter = self._response_waiters[req_id]
@@ -127,6 +135,12 @@ class RPCClient:
         else:
             self.log.warning(f"Unexpected response command to {req_id}: {command} {req}")
 
+    async def _command_loop(self) -> None:
+        while True:
+            await self._command_sem.acquire()
+            req_id, command, req = self._command_queue.pop(0)
+            await self._run_event_handler(req_id, command, req)
+
     async def _try_read_loop(self) -> None:
         try:
             await self._read_loop()
diff --git a/matrix_puppeteer_line/user.py b/matrix_puppeteer_line/user.py
index 3bc157a..50fd3d9 100644
--- a/matrix_puppeteer_line/user.py
+++ b/matrix_puppeteer_line/user.py
@@ -116,6 +116,7 @@ class User(DBUser, BaseUser):
         self._connection_check_task = self.loop.create_task(self._check_connection_loop())
         await self.client.set_last_message_ids(await DBMessage.get_max_mids())
         self.log.info("Syncing chats")
+        await self.client.pause()
         chats = await self.client.get_chats()
         limit = self.config["bridge.initial_conversation_sync"]
         for index, chat in enumerate(chats):
@@ -126,6 +127,7 @@ class User(DBUser, BaseUser):
                     await portal.update_matrix_room(self, chat)
                 else:
                     await portal.create_matrix_room(self, chat)
+        await self.client.resume()
 
     async def stop(self) -> None:
         if self._connection_check_task:
diff --git a/puppet/src/client.js b/puppet/src/client.js
index ba2f3e2..b48aaaa 100644
--- a/puppet/src/client.js
+++ b/puppet/src/client.js
@@ -103,6 +103,7 @@ export default class Client {
 		return this._write({
 			id: --this.notificationID,
 			command: "message",
+			is_sequential: true,
 			message,
 		})
 	}
@@ -230,6 +231,8 @@ export default class Client {
 				send: req => this.puppet.sendMessage(req.chat_id, req.text),
 				send_file: req => this.puppet.sendFile(req.chat_id, req.file_path),
 				set_last_message_ids: req => this.puppet.setLastMessageIDs(req.msg_ids),
+				pause: () => this.puppet.stopObserving(),
+				resume: () => this.puppet.startObserving(),
 				get_chats: () => this.puppet.getRecentChats(),
 				get_chat: req => this.puppet.getChatInfo(req.chat_id),
 				get_messages: req => this.puppet.getMessages(req.chat_id),