diff --git a/bec_widgets/widgets/plots/waveform/waveform.py b/bec_widgets/widgets/plots/waveform/waveform.py
index 2fb9e672..bf6ff521 100644
--- a/bec_widgets/widgets/plots/waveform/waveform.py
+++ b/bec_widgets/widgets/plots/waveform/waveform.py
@@ -1175,6 +1175,7 @@ class Waveform(PlotBase):
         except KeyError:
             logger.warning(f"Curve {name} not found in plot item.")
             pass
+        QApplication.processEvents()
         self.bec_dispatcher.connect_slot(
             self.on_async_readback,
             MessageEndpoints.device_async_readback(self.scan_id, name),