diff --git a/Software/Integrationtests/tests/TestBase.py b/Software/Integrationtests/tests/TestBase.py
index 2213005..c5c63e1 100644
--- a/Software/Integrationtests/tests/TestBase.py
+++ b/Software/Integrationtests/tests/TestBase.py
@@ -14,15 +14,16 @@ class TestBase(unittest.TestCase):
         timeout = time.time() + 3;
         poll_obj = select.poll()
         poll_obj.register(self.gui.stdout, select.POLLIN)
-        while time.time() < timeout:
+        while True:
             poll_result = poll_obj.poll(0)
             if poll_result:
                 line = self.gui.stdout.readline().decode().strip()
                 if "Listening on port 19544" in line:
                     break
-       
-        time.sleep(1)
-        
+            if time.time() >= timeout:
+                self.tearDown()
+                raise AssertionError("Timed out waiting for SCPI server")
+
         self.vna = libreVNA('localhost', 19544, timeout=4)
         try:
             self.vna.cmd("*CLS;:DEV:CONN")
@@ -34,6 +35,8 @@ class TestBase(unittest.TestCase):
             raise AssertionError("Not connected")
                
     def tearDown(self):
+        # make sure the GUI did not crash during the test
+        self.assertEqual(self.gui.poll(), None)
         self.gui.send_signal(SIGINT)
         try:
             self.gui.wait(timeout = 3)
diff --git a/Software/Integrationtests/tests/TestRST.py b/Software/Integrationtests/tests/TestRST.py
index 84dceba..3471934 100644
--- a/Software/Integrationtests/tests/TestRST.py
+++ b/Software/Integrationtests/tests/TestRST.py
@@ -236,16 +236,10 @@ class TestRST(TestBase):
         self.vna.cmd(f"VNA:STIM:FREQ {f_1_3}")
         self.vna.cmd(f"VNA:STIM:LVL {pwr_min}")
         self.vna.cmd("VNA:SWEEP POWER")
-        
-        # We just configured a lot of settings, give some time to empty the output queue from the GUI to the device
-        time.sleep(2)
 
         # Reset and verify all settings revert.
         self.vna.cmd("*RST")
         
-        # ... and wait a little bit here again to let the changes from the RST propagate from the device and back to the GUI (otherwise we might still read wrong external reference settings for example)
-        time.sleep(2)
-        
         settings2 = self.query_settings()
         for key, value in settings1.items():
             self.assertEqual(value, settings2[key])