Removed unnecessary and problematic immediate update when calling play on an Animation. Update will accumulate the blend weights for the animation and we don't want it being done twice on any particular frame.

src/extras/animation/Animation.js

@@ -32,11 +32,10 @@ THREE.Animation.prototype.play = function ( startTime, weight ) {
 	this.weight = weight !== undefined ? weight: 1;
 
 	this.isPlaying = true;
-	this.reset();
-	this.update( 0 );
-
 	this.isPaused = false;
 
+	this.reset();
+
 	THREE.AnimationHandler.addToUpdate( this );
 
 };