diff --git a/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj b/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
index a746c1e9f4..59e15e079e 100644
--- a/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
+++ b/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
@@ -3271,7 +3271,6 @@
 				INFOPLIST_FILE = Info-App.plist;
 				INFOPLIST_PREPROCESS = NO;
 				INSTALL_PATH = "$(HOME)/Applications";
-				LLVM_LTO = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				OTHER_CPLUSPLUSFLAGS = "-Wall -Wno-missing-field-initializers -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion  -Wunused-private-field -Wbool-conversion -Wextra-semi -Wno-ignored-qualifiers -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wundefined-func-template -Wnullable-to-nonnull-conversion";
 				PRODUCT_BUNDLE_IDENTIFIER = com.juce.theprojucer;
diff --git a/extras/Projucer/Builds/VisualStudio2013/Projucer_App.vcxproj b/extras/Projucer/Builds/VisualStudio2013/Projucer_App.vcxproj
index 08b0a7ebde..7c2611c120 100644
--- a/extras/Projucer/Builds/VisualStudio2013/Projucer_App.vcxproj
+++ b/extras/Projucer/Builds/VisualStudio2013/Projucer_App.vcxproj
@@ -29,7 +29,7 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
     <PlatformToolset>v120</PlatformToolset>
     <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
diff --git a/extras/Projucer/Builds/VisualStudio2015/Projucer_App.vcxproj b/extras/Projucer/Builds/VisualStudio2015/Projucer_App.vcxproj
index 9ed4deabac..4275e3720a 100644
--- a/extras/Projucer/Builds/VisualStudio2015/Projucer_App.vcxproj
+++ b/extras/Projucer/Builds/VisualStudio2015/Projucer_App.vcxproj
@@ -29,7 +29,7 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
     <PlatformToolset>v140</PlatformToolset>
     <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
diff --git a/extras/Projucer/Builds/VisualStudio2017/Projucer_App.vcxproj b/extras/Projucer/Builds/VisualStudio2017/Projucer_App.vcxproj
index 1dede50bcd..000ce3f9e1 100644
--- a/extras/Projucer/Builds/VisualStudio2017/Projucer_App.vcxproj
+++ b/extras/Projucer/Builds/VisualStudio2017/Projucer_App.vcxproj
@@ -29,7 +29,7 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
     <PlatformToolset>v141</PlatformToolset>
     <WindowsTargetPlatformVersion Condition="'$(WindowsTargetPlatformVersion)' == ''">$([Microsoft.Build.Utilities.ToolLocationHelper]::GetLatestSDKTargetPlatformVersion('Windows', '10.0'))</WindowsTargetPlatformVersion>
   </PropertyGroup>
diff --git a/extras/Projucer/Builds/VisualStudio2019/Projucer_App.vcxproj b/extras/Projucer/Builds/VisualStudio2019/Projucer_App.vcxproj
index edee98b575..5bd0262e4d 100644
--- a/extras/Projucer/Builds/VisualStudio2019/Projucer_App.vcxproj
+++ b/extras/Projucer/Builds/VisualStudio2019/Projucer_App.vcxproj
@@ -29,7 +29,7 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
     <PlatformToolset>v142</PlatformToolset>
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
diff --git a/extras/Projucer/Projucer.jucer b/extras/Projucer/Projucer.jucer
index 6c8165db3c..ec9182db20 100644
--- a/extras/Projucer/Projucer.jucer
+++ b/extras/Projucer/Projucer.jucer
@@ -12,7 +12,8 @@
                extraFrameworks="AudioUnit; Accelerate; AVFoundation; CoreAudio; CoreAudioKit; CoreMIDI; DiscRecording; QuartzCore; AudioToolbox; OpenGL; QTKit; QuickTime">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" cppLibType="libc++"/>
-        <CONFIGURATION name="Release" isDebug="0" targetName="Projucer" cppLibType="libc++"/>
+        <CONFIGURATION name="Release" isDebug="0" targetName="Projucer" cppLibType="libc++"
+                       linkTimeOptimisation="0"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>
@@ -30,7 +31,7 @@
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" wholeProgramOptimisation="1"
                        debugInformationFormat="ProgramDatabase" useRuntimeLibDLL="1"/>
         <CONFIGURATION name="Release" isDebug="0" targetName="Projucer" useRuntimeLibDLL="0"
-                       debugInformationFormat="None"/>
+                       debugInformationFormat="None" linkTimeOptimisation="0"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>
@@ -48,7 +49,7 @@
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" debugInformationFormat="ProgramDatabase"
                        useRuntimeLibDLL="1"/>
         <CONFIGURATION name="Release" isDebug="0" targetName="Projucer" useRuntimeLibDLL="0"
-                       debugInformationFormat="None"/>
+                       debugInformationFormat="None" linkTimeOptimisation="0"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>
@@ -65,7 +66,7 @@
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" useRuntimeLibDLL="0"/>
         <CONFIGURATION name="Release" isDebug="0" optimisation="3" targetName="Projucer"
-                       debugInformationFormat="None" useRuntimeLibDLL="0"/>
+                       debugInformationFormat="None" useRuntimeLibDLL="0" linkTimeOptimisation="0"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>
@@ -82,7 +83,7 @@
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" useRuntimeLibDLL="0"/>
         <CONFIGURATION name="Release" isDebug="0" optimisation="3" targetName="Projucer"
-                       debugInformationFormat="None" useRuntimeLibDLL="0"/>
+                       debugInformationFormat="None" useRuntimeLibDLL="0" linkTimeOptimisation="0"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>