diff --git a/indra/llfilesystem/lldir.cpp b/indra/llfilesystem/lldir.cpp
index a18dc0a4f13..99d48506103 100644
--- a/indra/llfilesystem/lldir.cpp
+++ b/indra/llfilesystem/lldir.cpp
@@ -721,6 +721,8 @@ std::vector<std::string> LLDir::findSkinnedFilenames(const std::string& subdir,
                                                      const std::string& filename,
                                                      ESkinConstraint constraint) const
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
+
     // Recognize subdirs that have no localization.
     static const std::set<std::string> sUnlocalized = list_of
         ("")                        // top-level directory not localized
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index ec06582d901..1d8cae4e954 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -10314,7 +10314,7 @@
       <key>Type</key>
       <string>S32</string>
       <key>Value</key>
-      <integer>1</integer>
+      <integer>2</integer>
     </map>
     <key>ShowAxes</key>
     <map>
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index 5d33db591a7..e36a03a749a 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -6020,6 +6020,7 @@ bool LLViewerObject::isParticleSource() const
 
 void LLViewerObject::setParticleSource(const LLPartSysData& particle_parameters, const LLUUID& owner_id)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_VIEWER;
     if (mPartSourcep)
     {
         deleteParticleSource();
@@ -6051,6 +6052,7 @@ void LLViewerObject::setParticleSource(const LLPartSysData& particle_parameters,
 
 void LLViewerObject::unpackParticleSource(const S32 block_num, const LLUUID& owner_id)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_VIEWER;
     if (!mPartSourcep.isNull() && mPartSourcep->isDead())
     {
         mPartSourcep = NULL;
@@ -6086,7 +6088,7 @@ void LLViewerObject::unpackParticleSource(const S32 block_num, const LLUUID& own
             LLViewerTexture* image;
             if (mPartSourcep->mPartSysData.mPartImageID == LLUUID::null)
             {
-                image = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+                image = LLViewerFetchedTexture::sDefaultParticleImagep;
             }
             else
             {
@@ -6099,6 +6101,7 @@ void LLViewerObject::unpackParticleSource(const S32 block_num, const LLUUID& own
 
 void LLViewerObject::unpackParticleSource(LLDataPacker &dp, const LLUUID& owner_id, bool legacy)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_VIEWER;
     if (!mPartSourcep.isNull() && mPartSourcep->isDead())
     {
         mPartSourcep = NULL;
@@ -6133,7 +6136,7 @@ void LLViewerObject::unpackParticleSource(LLDataPacker &dp, const LLUUID& owner_
             LLViewerTexture* image;
             if (mPartSourcep->mPartSysData.mPartImageID == LLUUID::null)
             {
-                image = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+                image = LLViewerFetchedTexture::sDefaultParticleImagep;
             }
             else
             {
diff --git a/indra/newview/llviewerpartsource.cpp b/indra/newview/llviewerpartsource.cpp
index dd6a4048365..54e0470604a 100644
--- a/indra/newview/llviewerpartsource.cpp
+++ b/indra/newview/llviewerpartsource.cpp
@@ -114,7 +114,7 @@ LLViewerPartSourceScript::LLViewerPartSourceScript(LLViewerObject *source_objp)
     llassert(source_objp);
     mSourceObjectp = source_objp;
     mPosAgent = mSourceObjectp->getPositionAgent();
-    mImagep = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+    mImagep = LLViewerFetchedTexture::sDefaultParticleImagep;
 
     mImagep->setAddressMode(LLTexUnit::TAM_CLAMP);
 }
@@ -619,7 +619,7 @@ void LLViewerPartSourceSpiral::update(const F32 dt)
 {
     if (!mImagep)
     {
-        mImagep = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+        mImagep = LLViewerFetchedTexture::sDefaultParticleImagep;
     }
 
     const F32 RATE = 0.025f;
@@ -789,7 +789,7 @@ void LLViewerPartSourceBeam::update(const F32 dt)
 
         if (!mImagep)
         {
-            mImagep = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+            mImagep = LLViewerFetchedTexture::sDefaultParticleImagep;
         }
 
         LLViewerPart* part = new LLViewerPart();
@@ -876,7 +876,7 @@ void LLViewerPartSourceChat::update(const F32 dt)
 {
     if (!mImagep)
     {
-        mImagep = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+        mImagep = LLViewerFetchedTexture::sDefaultParticleImagep;
     }
 
 
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index f221efae7ec..bb16fec32a6 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -70,6 +70,7 @@ LLPointer<LLViewerTexture>        LLViewerTexture::sBlackImagep = nullptr;
 LLPointer<LLViewerTexture>        LLViewerTexture::sCheckerBoardImagep = nullptr;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sMissingAssetImagep = nullptr;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sWhiteImagep = nullptr;
+LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sDefaultParticleImagep = nullptr;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sDefaultImagep = nullptr;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sSmokeImagep = nullptr;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sFlatNormalImagep = nullptr;
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index 3866c898a66..65fa633f815 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -507,6 +507,7 @@ class LLViewerFetchedTexture : public LLViewerTexture
     static LLPointer<LLViewerFetchedTexture> sDefaultImagep; // "Default" texture for error cases, the only case of fetched texture which is generated in local.
     static LLPointer<LLViewerFetchedTexture> sFlatNormalImagep; // Flat normal map denoting no bumpiness on a surface
     static LLPointer<LLViewerFetchedTexture> sDefaultIrradiancePBRp; // PBR: irradiance
+    static LLPointer<LLViewerFetchedTexture> sDefaultParticleImagep; // Default particle texture
 
     // not sure why, but something is iffy about the loading of this particular texture, use the accessor instead of accessing directly
     static LLPointer<LLViewerFetchedTexture> sSmokeImagep; // Old "Default" translucent texture
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index a5700ab2644..53b054cb24c 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -123,6 +123,9 @@ void LLViewerTextureList::doPreloadImages()
     LLTexUnit::sWhiteTexture = LLViewerFetchedTexture::sWhiteImagep->getTexName();
     LLUIImageList* image_list = LLUIImageList::getInstance();
 
+    // Set default particle texture
+    LLViewerFetchedTexture::sDefaultParticleImagep = LLViewerTextureManager::getFetchedTextureFromFile("pixiesmall.j2c");
+
     // Set the default flat normal map
     // BLANK_OBJECT_NORMAL has a version on dataserver, but it has compression artifacts
     LLViewerFetchedTexture::sFlatNormalImagep =
@@ -403,6 +406,7 @@ LLViewerFetchedTexture* LLViewerTextureList::getImageFromFile(const std::string&
                                                    const LLUUID& force_id)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+    LL_PROFILE_ZONE_TEXT(filename.c_str(), filename.size());
     if(!mInitialized)
     {
         return NULL ;