diff --git a/src/js/controller/FramesListController.js b/src/js/controller/FramesListController.js
index 14706d38..a65c4aba 100644
--- a/src/js/controller/FramesListController.js
+++ b/src/js/controller/FramesListController.js
@@ -1,6 +1,8 @@
 (function () {
   var ns = $.namespace('pskl.controller');
 
+  var RENDER_MINIMUM_DELAY = 1000;
+
   var ACTION = {
     SELECT : 'select',
     CLONE : 'clone',
@@ -13,6 +15,7 @@
     this.container = container;
     this.refreshZoom_();
 
+    this.lastRenderTime = 0;
     this.redrawFlag = true;
 
     this.cachedFrameProcessor = new pskl.model.frame.CachedFrameProcessor();
@@ -41,9 +44,10 @@
   };
 
   ns.FramesListController.prototype.render = function () {
-    if (this.redrawFlag) {
+    if (this.redrawFlag && (Date.now() - this.lastRenderTime > RENDER_MINIMUM_DELAY)) {
       this.createPreviews_();
       this.redrawFlag = false;
+      this.lastRenderTime = Date.now();
     }
   };
 
diff --git a/src/js/controller/preview/PreviewController.js b/src/js/controller/preview/PreviewController.js
index f8cf79b4..63ef3ba2 100644
--- a/src/js/controller/preview/PreviewController.js
+++ b/src/js/controller/preview/PreviewController.js
@@ -3,6 +3,7 @@
 
   // Preview is a square of PREVIEW_SIZE x PREVIEW_SIZE
   var PREVIEW_SIZE = 200;
+  var RENDER_MINIMUM_DELAY = 1000;
 
   var ONION_SKIN_SHORTCUT = 'alt+O';
   var ORIGINAL_SIZE_SHORTCUT = 'alt+1';
@@ -17,6 +18,7 @@
     this.onionSkinShortcut = pskl.service.keyboard.Shortcuts.MISC.ONION_SKIN;
     this.originalSizeShortcut = pskl.service.keyboard.Shortcuts.MISC.X1_PREVIEW;
 
+    this.lastRenderTime = 0;
     this.renderFlag = true;
 
     /**
@@ -173,6 +175,7 @@
       var frame = pskl.utils.LayerUtils.mergeFrameAt(this.piskelController.getLayers(), index);
       this.renderer.render(frame);
       this.renderFlag = false;
+      this.lastRenderTime = Date.now();
 
       this.popupPreviewController.render(frame);
     }
@@ -241,7 +244,7 @@
   };
 
   ns.PreviewController.prototype.shouldRender_ = function () {
-    return this.renderFlag || this.popupPreviewController.renderFlag;
+    return (this.renderFlag || this.popupPreviewController.renderFlag) && (Date.now() - this.lastRenderTime > RENDER_MINIMUM_DELAY);
   };
 
   ns.PreviewController.prototype.toggleOnionSkin_ = function () {