diff --git a/plugins/samplesink/plutosdroutput/plutosdroutput.cpp b/plugins/samplesink/plutosdroutput/plutosdroutput.cpp
index c9c6424ff..39459fff3 100644
--- a/plugins/samplesink/plutosdroutput/plutosdroutput.cpp
+++ b/plugins/samplesink/plutosdroutput/plutosdroutput.cpp
@@ -138,6 +138,8 @@ bool PlutoSDROutput::handleMessage(const Message& message)
         PlutoSDROutputSettings newSettings = m_settings;
         newSettings.m_lpfFIREnable = conf.isLpfFirEnable();
         applySettings(newSettings);
+
+        return true;
     }
     else
     {
diff --git a/plugins/samplesource/plutosdrinput/plutosdrinput.cpp b/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
index c54049b74..58dc1367c 100644
--- a/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
+++ b/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
@@ -26,7 +26,7 @@
 #include "plutosdrinput.h"
 #include "plutosdrinputthread.h"
 
-#define PLUTOSDR_BLOCKSIZE_SAMPLES (32*1024) //complex samples per buffer (must be multiple of 64)
+#define PLUTOSDR_BLOCKSIZE_SAMPLES (8*1024) //complex samples per buffer (must be multiple of 64)
 
 MESSAGE_CLASS_DEFINITION(PlutoSDRInput::MsgConfigurePlutoSDR, Message)
 MESSAGE_CLASS_DEFINITION(PlutoSDRInput::MsgFileRecord, Message)
@@ -160,6 +160,8 @@ bool PlutoSDRInput::handleMessage(const Message& message)
         PlutoSDRInputSettings newSettings = m_settings;
         newSettings.m_lpfFIREnable = conf.isLpfFirEnable();
         applySettings(newSettings);
+
+        return true;
     }
     else
     {