diff --git a/pytchat/__init__.py b/pytchat/__init__.py
index 7f26001..75531ce 100644
--- a/pytchat/__init__.py
+++ b/pytchat/__init__.py
@@ -2,7 +2,7 @@
 pytchat is a python library for fetching youtube live chat.
 """
 __copyright__    = 'Copyright (C) 2019 taizan-hokuto'
-__version__      = '0.0.1.6'
+__version__      = '0.0.1.7'
 __license__      = 'MIT'
 __author__       = 'taizan-hokuto'
 __author_email__ = '55448286+taizan-hokuto@users.noreply.github.com'
diff --git a/pytchat/paramgen/liveparam.py b/pytchat/paramgen/liveparam.py
index cf0e5b6..b289f2c 100644
--- a/pytchat/paramgen/liveparam.py
+++ b/pytchat/paramgen/liveparam.py
@@ -122,7 +122,7 @@ def _build(video_id, _ts1, _ts2, _ts3, _ts4, _ts5, topchatonly = False):
             )
 
     
-def _times():
+def _times(past_sec):
     
     def unixts_now():
         now = datetime.datetime.now(pytz.utc)
@@ -132,12 +132,18 @@ def _times():
     
     _ts1= n - random.uniform(0,1*3)    
     _ts2= n - random.uniform(0.01,0.99)    
-    _ts3= n - 60*60 + random.uniform(0,1)
+    _ts3= n - past_sec + random.uniform(0,1)
     _ts4= n - random.uniform(10*60,60*60)         
     _ts5= n - random.uniform(0.01,0.99)
     return list(map(lambda x:int(x*1000000),[_ts1,_ts2,_ts3,_ts4,_ts5]))
 
 
-def getparam(video_id):
-    return _build(video_id,*_times())
+def getparam(video_id,past_sec = 60):
+    '''
+    Parameter
+    ---------
+    past_sec : int
+        seconds to load past chat data
+    '''
+    return _build(video_id,*_times(past_sec))
 
diff --git a/pytchat/processors/default/processor.py b/pytchat/processors/default/processor.py
index 0b063fa..2c1834c 100644
--- a/pytchat/processors/default/processor.py
+++ b/pytchat/processors/default/processor.py
@@ -16,7 +16,7 @@ class Chatdata:
 
     async def tick_async(self):
         if self.interval == 0:
-            await asyncio.sleep(3)
+            await asyncio.sleep(0.5)
             return
         await asyncio.sleep(self.interval/len(self.items))
 
diff --git a/setup.py b/setup.py
index 70d53a0..295d63a 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ with open('README.md', encoding='utf-8') as f:
 
 setup(
     name=package_name,
-    packages=[package_name],
+    packages=find_packages(),
 
     version=version,