diff --git a/bin/collector b/bin/collector
--- a/bin/collector
+++ b/bin/collector
@@ -61,8 +61,10 @@ def startZmq(port, collector):
 def launch(graph):
 
     # todo: drive outputs with config files
-    outputs = [EnttecDmx(L9['output/dmx0/'], '/dev/dmx0'),
-               Udmx(L9['output/udmx/'])]
+    outputs = [
+        EnttecDmx(L9['output/dmx0/'], '/dev/dmx0'),
+        Udmx(L9['output/udmx/']),
+    ]
     c = Collector(graph, outputs)
 
     server = WebServer(c)
diff --git a/light9/collector/collector.py b/light9/collector/collector.py
--- a/light9/collector/collector.py
+++ b/light9/collector/collector.py
@@ -109,7 +109,9 @@ class Collector(object):
             for outputAttr, value in attrs.iteritems():
                 self.setAttr(device, outputAttr, value, pendingOut)
 
+        print "%.1fms for client math" % (1000 * (time.time() - now))
         self.flush(pendingOut)
+        print "%.1fms including flush" % (1000 * (time.time() - now))
 
     def setAttr(self, device, outputAttr, value, pendingOut):
         output, index = self.outputMap[(device, outputAttr)]
diff --git a/light9/collector/device.py b/light9/collector/device.py
--- a/light9/collector/device.py
+++ b/light9/collector/device.py
@@ -9,6 +9,7 @@ import colormath.color_conversions
 
 log = logging.getLogger('device')
 
+
 class Device(object):
     def setAttrs():
         pass
diff --git a/light9/collector/output.py b/light9/collector/output.py
--- a/light9/collector/output.py
+++ b/light9/collector/output.py
@@ -68,7 +68,7 @@ class EnttecDmx(DmxOutput):
         self.dev = Dmx(devicePath)
         self.currentBuffer = ''
         self.lastLog = 0
-        task.LoopingCall(self._loop).start(1 / 50)
+        task.LoopingCall(self._loop).start(0.050)
 
     @stats.update.time()
     def update(self, values):
@@ -105,7 +105,7 @@ class Udmx(DmxOutput):
         #   2. Retries if there are usb errors.
         # Copying the LoopingCall logic accomplishes those with a
         # little wasted time if there are no updates.
-        task.LoopingCall(self._loop).start(1 / 50)
+        task.LoopingCall(self._loop).start(0.050)
 
     @stats.update.time()
     def update(self, values):
@@ -117,14 +117,13 @@ class Udmx(DmxOutput):
         self.currentBuffer = ''.join(map(chr, values))
     
     def _loop(self):
-        if self.lastSentBuffer == self.currentBuffer:
-            return
+        #if self.lastSentBuffer == self.currentBuffer:
+        #    return
         with Udmx.stats.write.time():
             # frequently errors with usb.core.USBError
             try:
                 self.dev.SendDMX(self.currentBuffer)
                 self.lastSentBuffer = self.currentBuffer
-                return
             except usb.core.USBError:
                 Udmx.stats.usbErrors += 1