diff --git a/light9/vidref/main.py b/light9/vidref/main.py
--- a/light9/vidref/main.py
+++ b/light9/vidref/main.py
@@ -28,7 +28,7 @@ class Gui(object):
         self.musicScale = wtree.get_object("musicScale")
         self.musicScale.connect("value-changed", self.onMusicScaleValue)
         # tiny race here if onMusicScaleValue tries to use musicTime right away
-        self.musicTime = MusicTime(onChange=self.onMusicTimeChange)
+        self.musicTime = MusicTime(onChange=self.onMusicTimeChange, pollCurvecalc=False)
         self.ignoreScaleChanges = False
         # self.attachLog(wtree.get_object("lastLog")) # disabled due to crashing
 
diff --git a/light9/web/timeline/timeline.coffee b/light9/web/timeline/timeline.coffee
--- a/light9/web/timeline/timeline.coffee
+++ b/light9/web/timeline/timeline.coffee
@@ -94,7 +94,7 @@ Polymer
         @viewState.mouse.pos($V([ev.pageX - @root.left, ev.pageY - @root.top]))
 
         @dia.setMouse(@viewState.mouse.pos())
-        #@sendMouseToVidref()
+        @sendMouseToVidref()
 
   sendMouseToVidref: ->
     now = Date.now()