diff --git a/stimBuffApis/livoxGen1/pcloudStimulusBuffer.cpp b/stimBuffApis/livoxGen1/pcloudStimulusBuffer.cpp
index e466180..66805cf 100644
--- a/stimBuffApis/livoxGen1/pcloudStimulusBuffer.cpp
+++ b/stimBuffApis/livoxGen1/pcloudStimulusBuffer.cpp
@@ -38,6 +38,14 @@ collationBuffer(
 	StagingBuffer::IOEngineConstraints::openClInputConstraints,
 	nDgramsPerStagingBufferFrame)
 {
+	if (smoHooksPtr->OptionParser_getOptions().verbose)
+	{
+		std::cout << __func__ << ": assembly buffer : "
+			<< assemblyBuffer.stringify()
+			<< "\n\tcollation buffer : " << collationBuffer.stringify()
+			<< "\n";
+	}
+
 	std::cout << __func__ << ": Device's component thread is "
 		<< device->componentThread->name << std::endl;
 
diff --git a/stimBuffApis/livoxGen1/stagingBuffer.cpp b/stimBuffApis/livoxGen1/stagingBuffer.cpp
index c1e2989..c9841e6 100644
--- a/stimBuffApis/livoxGen1/stagingBuffer.cpp
+++ b/stimBuffApis/livoxGen1/stagingBuffer.cpp
@@ -26,8 +26,8 @@ const StagingBuffer::IOEngineConstraints
 StagingBuffer::IOEngineConstraints::openClInputConstraints(
 	// slotStartAlignmentByteVal (page alignment)
 	static_cast<size_t>(sysconf(_SC_PAGE_SIZE)),
-	// slotPadToNBytes (pointer size)
-	sizeof(void *),
+	// slotPadToNBytes (XYZI point size)
+	16,
 	// frameStartAlignmentByteVal (page alignment)
 	static_cast<size_t>(sysconf(_SC_PAGE_SIZE)),
 	// framePadToNBytes (pointer size)