diff --git a/src/tec/letsgoing/ardublock/simulator/view/GUI.java b/src/tec/letsgoing/ardublock/simulator/view/GUI.java
index 292ad35da4b94ccdd867857a543024fcaf134398..3fff8786bf2dbd25df45830ed6a8529589bc13fd 100644
--- a/src/tec/letsgoing/ardublock/simulator/view/GUI.java
+++ b/src/tec/letsgoing/ardublock/simulator/view/GUI.java
@@ -428,7 +428,8 @@ public class GUI extends JFrame implements Runnable, ActionListener {
 		while (!stopFlag) {
 			try {
 				//Thread.sleep(7); // 144 Hz
-				Thread.sleep(17); //60 Hz
+				//Thread.sleep(17); //60 Hz
+				Thread.sleep(50); //20 Hz
 			} catch (InterruptedException e) {
 
 				// e.printStackTrace();