diff --git a/examples/timertool.s b/examples/timertool.s
index 013a3eaa..303d0dac 100644
--- a/examples/timertool.s
+++ b/examples/timertool.s
@@ -26,7 +26,13 @@ loop:
 	ecall
 	li	a7, 4
 	la	a0, newLine
-	ecall	
+	ecall
+
+        # Sleep for 10 ms
+	li a0, 10
+	li a7, 32
+	ecall
+
 	j	loop
 
 
diff --git a/src/rars/util/SystemIO.java b/src/rars/util/SystemIO.java
index ae10205e..0f12e239 100644
--- a/src/rars/util/SystemIO.java
+++ b/src/rars/util/SystemIO.java
@@ -144,7 +144,7 @@ public static void printString(String string) {
         if (Globals.getGui() == null) {
             System.out.print(string);
         } else {
-            Globals.getGui().getMessagesPane().postRunMessage(string);
+            print2Gui(string);
         }
 
     }
@@ -211,7 +211,7 @@ public static int writeToFile(int fd, byte[] myBuffer, int lengthRequested) {
         /// Write to STDOUT or STDERR file descriptor while using IDE - write to Messages pane.
         if ((fd == STDOUT || fd == STDERR) && Globals.getGui() != null) {
             String data = new String(myBuffer, StandardCharsets.UTF_8); //decode the bytes using UTF-8 charset
-            Globals.getGui().getMessagesPane().postRunMessage(data);
+            print2Gui(data);
             return myBuffer.length; // data.length would not count multi-byte characters
         }
         ///////////////////////////////////////////////////////////////////////////////////
@@ -441,6 +441,19 @@ private static BufferedReader getInputReader() {
         return inputReader;
     }
 
+    private static String buffer = "";
+    private static long lasttime = 0;
+    private static void print2Gui(String output){
+        long time = System.currentTimeMillis();
+        if (time > lasttime) {
+            Globals.getGui().getMessagesPane().postRunMessage(buffer+output);
+            buffer = "";
+            lasttime = time + 100;
+        } else {
+            buffer += output;
+        }
+    }
+
     public static Data swapData(Data in){
         Data temp = new Data(false);
         temp.fileNames = FileIOData.fileNames;