diff --git a/PCbuild9/pginstrument.vsprops b/PCbuild9/pginstrument.vsprops
index cd904d3..93b9687 100644
--- a/PCbuild9/pginstrument.vsprops
+++ b/PCbuild9/pginstrument.vsprops
@@ -8,10 +8,10 @@
 	>
 	<Tool
 		Name="VCCLCompilerTool"
-		Optimization="3"
-		InlineFunctionExpansion="2"
-		EnableIntrinsicFunctions="true"
-		FavorSizeOrSpeed="1"
+		Optimization="2"
+		InlineFunctionExpansion="1"
+		EnableIntrinsicFunctions="false"
+		FavorSizeOrSpeed="2"
 		OmitFramePointers="true"
 		EnableFiberSafeOptimizations="false"
 		WholeProgramOptimization="true"