diff --git a/doc-src/scripting/inlinescripts.html b/doc-src/scripting/inlinescripts.html
index 2c3e0d6fd..7f05eedfe 100644
--- a/doc-src/scripting/inlinescripts.html
+++ b/doc-src/scripting/inlinescripts.html
@@ -130,7 +130,7 @@ The main classes you will deal with in writing mitmproxy scripts are:
         </td>
     </tr>
     <tr>
-        <th>libmproxy.certutils.SSLCert</th>
+        <th>netlib.certutils.SSLCert</th>
         <td>Exposes information SSL certificates.</td>
     </tr>
 </table>
@@ -174,4 +174,4 @@ matching events will be skipped.
 ## Spaces in the script path
 By default, spaces are interpreted as separator between the inline script and its arguments (e.g. <code>-s "foo.py
     42"</code>). Consequently, the script path needs to be wrapped in a separate pair of quotes if it contains spaces:
-<code>-s "'./foo bar/baz.py' 42"</code>.
\ No newline at end of file
+<code>-s "'./foo bar/baz.py' 42"</code>.
diff --git a/libmproxy/console/__init__.py b/libmproxy/console/__init__.py
index e2a0ec75f..b2f4d96c7 100644
--- a/libmproxy/console/__init__.py
+++ b/libmproxy/console/__init__.py
@@ -510,14 +510,22 @@ class ConsoleMaster(flow.FlowMaster):
     def client_playback_path(self, path):
         err, ret = self._readflow(path)
         if err:
-            self.statusbar.message(ret)
+            if not self.statusbar:
+                print >> sys.stderr, ret
+                sys.exit(1)
+            else:
+                self.statusbar.message(ret)
         else:
             self.start_client_playback(ret, False)
 
     def server_playback_path(self, path):
         err, ret = self._readflow(path)
         if err:
-            self.statusbar.message(ret)
+            if not self.statusbar:
+                print >> sys.stderr, ret
+                sys.exit(1)
+            else:
+                self.statusbar.message(ret)
         else:
             self.start_server_playback(
                 ret,
@@ -825,8 +833,8 @@ class ConsoleMaster(flow.FlowMaster):
                 if changed:
                     self.statusbar.redraw()
                     size = self.drawscreen()
-                changed = self.tick(self.masterq, 0.01)
-                self.ui.set_input_timeouts(max_wait=0.01)
+                changed = self.tick(self.masterq, timeout=0.1)
+                self.ui.set_input_timeouts(max_wait=0)
                 keys = self.ui.get_input()
                 if keys:
                     changed = True
diff --git a/libmproxy/controller.py b/libmproxy/controller.py
index 39e7695fa..9ca89184f 100644
--- a/libmproxy/controller.py
+++ b/libmproxy/controller.py
@@ -108,7 +108,11 @@ class Master(object):
         self.should_exit.clear()
         self.server.start_slave(Slave, Channel(self.masterq, self.should_exit))
         while not self.should_exit.is_set():
-            self.tick(self.masterq, 0.01)
+
+            # Don't choose a very small timeout in Python 2:
+            # https://github.com/mitmproxy/mitmproxy/issues/443
+            # TODO: Lower the timeout value if we move to Python 3.
+            self.tick(self.masterq, 0.1)
         self.shutdown()
 
     def handle(self, mtype, obj):
diff --git a/libmproxy/flow.py b/libmproxy/flow.py
index f3b138e27..97ebc572b 100644
--- a/libmproxy/flow.py
+++ b/libmproxy/flow.py
@@ -758,7 +758,7 @@ class FlowMaster(controller.Master):
                 self.shutdown()
             self.client_playback.tick(self)
 
-        return controller.Master.tick(self, q, timeout)
+        return super(FlowMaster, self).tick(q, timeout)
 
     def duplicate_flow(self, f):
         return self.load_flow(f.copy())
diff --git a/test/tools/bench.py b/test/tools/bench.py
new file mode 100644
index 000000000..1028f61d4
--- /dev/null
+++ b/test/tools/bench.py
@@ -0,0 +1,24 @@
+from __future__ import print_function
+import requests, time
+
+n = 100
+url = "http://192.168.1.1/"
+proxy = "http://192.168.1.115:8080/"
+
+start = time.time()
+for _ in range(n):
+	requests.get(url, allow_redirects=False, proxies=dict(http=proxy))
+	print(".", end="")
+t_mitmproxy = time.time()-start
+
+print("\r\nTotal time with mitmproxy: {}".format(t_mitmproxy))
+
+
+
+start = time.time()
+for _ in range(n):
+	requests.get(url, allow_redirects=False)
+	print(".", end="")
+t_without = time.time()-start
+
+print("\r\nTotal time without mitmproxy: {}".format(t_without))
\ No newline at end of file