diff --git a/lib/torque/leaflet/torque.js b/lib/torque/leaflet/torque.js
index 8fa8f58..2de2c38 100644
--- a/lib/torque/leaflet/torque.js
+++ b/lib/torque/leaflet/torque.js
@@ -60,6 +60,8 @@ L.TorqueLayer = L.CanvasLayer.extend({
     this.setDuration = this.animator.duration.bind(this.animator);
     this.isRunning = this.animator.isRunning.bind(this.animator);
 
+    this.lastStep = 0;
+
 
     L.CanvasLayer.prototype.initialize.call(this, options);
 
@@ -211,6 +213,7 @@ L.TorqueLayer = L.CanvasLayer.extend({
     this.renderer.clearCanvas();
     var ctx = canvas.getContext('2d');
     var brrr = false;
+
     
     for(t in this._tiles) {
       tile = this._tiles[t];
@@ -234,7 +237,9 @@ L.TorqueLayer = L.CanvasLayer.extend({
         }
       }
     }
-    if(!brrr) this.renderer.flush();
+    var full = this.getStep() < this.lastStep;
+    this.lastStep = this.getStep();
+    if(!brrr) this.renderer.flush(full);
     //this.renderer.applyFilters();
 
     // prepare caches if the animation is not running
diff --git a/lib/torque/renderer/point.js b/lib/torque/renderer/point.js
index 90c919e..c467256 100644
--- a/lib/torque/renderer/point.js
+++ b/lib/torque/renderer/point.js
@@ -396,13 +396,13 @@ var ballRenderer = require('./ball.js');
       }
     }
   },
-  flush: function(){
+  flush: function(full){
     this._ctx.setTransform(1, 0, 0, 1, 0, 0);
     if(!this.ballRenderer) return;
-    this.ballRenderer.contour(8);
-    this.ballRenderer.isopleth();
+    // this.ballRenderer.contour(4);
+    // this.ballRenderer.isopleth();
     this.ballRenderer.draw();
-    this.ballRenderer.invalidate();
+    this.ballRenderer.invalidate(full);
   }
 });