diff --git a/__main__.py b/__main__.py
index f3bd20c..84e2eab 100644
--- a/__main__.py
+++ b/__main__.py
@@ -77,10 +77,7 @@ class FetcherAPI:
         self.already_watching.append(user)
 
         client = self.clients.get_client()
-        task = ChannelHistoryReadTask()
-
-        peer = await client.resolve_peer(user)
-        task.setup(client, peer, config.webhook)
+        task = ChannelHistoryReadTask(client, user, config.webhook)
 
         await self.scheduler.submit(task)
         return aiohttp.web.Response(status=200)
diff --git a/async_worker/async_worker.py b/async_worker/async_worker.py
index da9f18d..e26e0e2 100644
--- a/async_worker/async_worker.py
+++ b/async_worker/async_worker.py
@@ -36,12 +36,14 @@ class AsyncTask(abc.ABC):
     __slots__ = [
         "_next",
         "_locked",
-        "_scheduler"
+        "_scheduler",
+        "_ready"
     ]
 
     def __init__(self):
         self._next = 0
         self._locked = False
+        self._ready = False
 
     def set_scheduler(self, scheduler: 'AsyncTaskScheduler'):
         self._scheduler = scheduler
@@ -64,9 +66,17 @@ class AsyncTask(abc.ABC):
     async def process(self) -> typing.Union[bool, int]:
         raise NotImplementedError
 
-    @abc.abstractmethod
-    def setup(self, *args, **kwargs):
-        raise NotImplementedError
+    async def _setup(self) -> bool:
+        result = await self.setup()
+        self._ready = True
+
+        if result is None:
+            return True
+
+        return result
+
+    async def setup(self) -> bool:
+        pass
 
     def set_next(self, _next: int):
         self._next = time.time_ns() + _next
@@ -77,6 +87,9 @@ class AsyncTask(abc.ABC):
     def get_delay(self) -> int:
         return self.get_next() - time.time_ns()
 
+    def is_ready(self) -> bool:
+        return self._ready
+
     def lock(self):
         self._locked = True
 
@@ -164,8 +177,8 @@ class SchedulerConfig:
     ]
 
     def __init__(self,
-        imprecise_delay: int = 2 * 1e+8,
-        skippable_delay: int = 3 * 1e+8,
+        imprecise_delay: int = 2 * 1e8,
+        skippable_delay: int = 3 * 1e8,
         max_fast_submit_tasks: int = 50
     ):
         self.imprecise_delay = imprecise_delay
@@ -239,29 +252,28 @@ class AsyncTaskScheduler:
 
                 if not runnable_tasks:
                     await self._wait_unlock.lock()
-                    await asyncio.sleep(0)
                     continue
 
-                fast_submit_tasks = [*filter(lambda x: x.get_delay() <= self._config.imprecise_delay, runnable_tasks)]
+                submittable = [*filter(lambda x: x.get_delay() <= self._config.imprecise_delay, runnable_tasks)]
 
-                if fast_submit_tasks:
-                    for task in fast_submit_tasks:
+                if submittable:
+
+                    for task in submittable:
                         task.lock()
                         task.set_scheduler(self)
 
-                    while fast_submit_tasks:
+                    while submittable:
                         futures = []
 
-                        for task in fast_submit_tasks[:self._config.max_fast_submit_tasks]:
+                        for task in submittable[:self._config.max_fast_submit_tasks]:
                             on_done = functools.partial(on_complete, task, self._queue, self._wait_unlock)
+                            future = asyncio.ensure_future(task._process() if task.is_ready() else task._setup())
 
-                            future = asyncio.ensure_future(task._process())
                             future.add_done_callback(on_done)
-
                             futures.append(future)
 
                         await asyncio.gather(*futures)
-                        fast_submit_tasks = fast_submit_tasks[self._config.max_fast_submit_tasks:]
+                        submittable = submittable[self._config.max_fast_submit_tasks:]
 
                     continue
 
diff --git a/tasks/executors/mtproto_task_abstraction.py b/tasks/executors/mtproto_task_abstraction.py
index d55ec13..cb11071 100644
--- a/tasks/executors/mtproto_task_abstraction.py
+++ b/tasks/executors/mtproto_task_abstraction.py
@@ -3,7 +3,7 @@ import typing
 
 from async_worker import AsyncTask
 
-from pyrogram.errors.exceptions import FloodWait, RPCError
+from pyrogram.errors.exceptions import FloodWait, RPCError, InternalServerError
 
 
 class MtProtoTask(AsyncTask, abc.ABC):
@@ -14,8 +14,11 @@ class MtProtoTask(AsyncTask, abc.ABC):
         except FloodWait as error:
             return int(error.MESSAGE.split("_")[-1]) * 1e9
 
-        except RPCError:
-            return False
+        except InternalServerError:
+            return 1e9
+
+        except RPCError as error:
+            return False if abs(error.CODE) < 500 else 1e9 * 2
 
     async def _setup(self) -> bool:
         return await self._execute(super()._setup)
diff --git a/tasks/webhook.py b/tasks/webhook.py
index bb9537e..2bca2c9 100644
--- a/tasks/webhook.py
+++ b/tasks/webhook.py
@@ -17,9 +17,11 @@ class WebHookDataForward(OneLoopAsyncTask):
         await res.read()
         res.close()
 
+    async def setup(self) -> bool:
+        self._http = aiohttp.ClientSession()
+
     def __init__(self, webhook: str, data: typing.Union[str, bytes]):
         super().__init__()
-        self._http = aiohttp.ClientSession()
 
         self._webhook = webhook
         self._data = data