diff --git a/sketch.js b/sketch.js
index ed2d719..c9a2d02 100644
--- a/sketch.js
+++ b/sketch.js
@@ -1,6 +1,8 @@
 var floorPos_y;
 var cameraPosX;
 var processStop_timer;
+var fps_recent_values = [];
+var showDebugData = false;
 
 var gameChar;
 
@@ -288,9 +290,12 @@ function draw() {
         text("Game over. Press space to continue...", 0, height / 2);
     else if (flagpole.isReached)
         text("Level complete. Press space to continue...", 0, height / 2);
+    if (showDebugData) {
     text(gameChar.curGroundPosYIndex, 99, 99);
     text(gameChar.getCurGroundPosY(), 188, 99);
     text(gameChar.sprite, 277, 99);
+    drawFps();
+    }
     pop();
 }
 
@@ -579,8 +584,8 @@ function drawClouds() {
         push();
         translate((frameCount / clouds[i].y) * 20, 0); // imitating clouds movement, upper ones should go faster
         // Adding counter-translating to implement parallax, the feeling of depth
-        // TODO: fix jitter during movement (possibly by implementing vectorized movement)
         translate(cameraPosX / 1.1, 0);
+        
         noStroke();
         fill(palette.cloud0);
         ellipse(
@@ -616,7 +621,7 @@ function drawMountains() {
     for (i = 0; i < mountains.length; i++) {
         push();
         // slowing down translation to add parallax, the feeling of depth
-        translate(cameraPosX / 2.2, 0);
+        translate(cameraPosX / 2, 0);
         noStroke();
         fill(palette.mountain_shadow);
         triangle(
@@ -778,7 +783,24 @@ function checkPlayerDie() {
         }
     }
 }
-
+function drawFps() {
+    push();
+     
+        fps = Math.round(frameRate() * 10) / 10;
+        if (fps_recent_values.length < 200) fps_recent_values.push(fps);
+        else fps_recent_values.shift();
+        fps_recent_values.push(fps);
+    
+    fill("red");
+    text(fps, 400, 99);
+    stroke("black");
+    beginShape(LINES);
+    for (i = 1; i < fps_recent_values.length; i++) {
+        vertex(i, fps_recent_values[i]);
+    }
+    endShape();
+    pop();
+}
 function keyPressed() {
     console.log(frameCount + " pressed " + key + " " + keyCode);
     if (gameChar.curLives < 1 || flagpole.isReached) {
@@ -801,9 +823,10 @@ function keyPressed() {
             gameChar.jumpingStrength = 15;
         }
     }
+    if (keyCode == 77 /*M*/) showDebugData = !showDebugData;
 }
 function keyReleased() {
     console.log(frameCount + " released " + key + " " + keyCode);
     if (keyCode == 65 /*A*/) gameChar.isLeft = false;
     if (keyCode == 68 /*D*/) gameChar.isRight = false;
-}
+}
\ No newline at end of file