diff --git a/client/TracyCallstack.cpp b/client/TracyCallstack.cpp
index d81e729c..0d32390a 100644
--- a/client/TracyCallstack.cpp
+++ b/client/TracyCallstack.cpp
@@ -37,9 +37,9 @@ void InitCallstack()
     SymSetOptions( SYMOPT_LOAD_LINES );
 }
 
-CallstackEntry DecodeCallstackPtr( uint64_t ptr )
+CallstackEntryData DecodeCallstackPtr( uint64_t ptr )
 {
-    CallstackEntry ret;
+    static CallstackEntry ret;
 
     const auto proc = GetCurrentProcess();
 
@@ -82,7 +82,7 @@ CallstackEntry DecodeCallstackPtr( uint64_t ptr )
 
     ret.file = file;
 
-    return ret;
+    return { &ret, 1 };
 }
 
 #elif TRACY_HAS_CALLSTACK >= 2
@@ -219,12 +219,12 @@ static void CallstackErrorCb( void* data, const char* msg, int errnum )
     cb_num = 1;
 }
 
-CallstackEntry DecodeCallstackPtr( uint64_t ptr )
+CallstackEntryData DecodeCallstackPtr( uint64_t ptr )
 {
     cb_num = 0;
     backtrace_pcinfo( cb_bts, ptr, CallstackDataCb, CallstackErrorCb, nullptr );
     assert( cb_num == 1 );
-    return cb_data[0];
+    return { cb_data, cb_num };
 }
 
 #endif
diff --git a/client/TracyCallstack.hpp b/client/TracyCallstack.hpp
index 6e014580..8b61c5ec 100644
--- a/client/TracyCallstack.hpp
+++ b/client/TracyCallstack.hpp
@@ -41,7 +41,13 @@ struct CallstackEntry
     uint32_t line;
 };
 
-CallstackEntry DecodeCallstackPtr( uint64_t ptr );
+struct CallstackEntryData
+{
+    const CallstackEntry* data;
+    uint8_t size;
+};
+
+CallstackEntryData DecodeCallstackPtr( uint64_t ptr );
 void InitCallstack();
 
 #if TRACY_HAS_CALLSTACK == 1
diff --git a/client/TracyProfiler.cpp b/client/TracyProfiler.cpp
index 71e3dfab..04432cfc 100644
--- a/client/TracyProfiler.cpp
+++ b/client/TracyProfiler.cpp
@@ -1487,22 +1487,35 @@ void Profiler::SendCallstackPayload( uint64_t _ptr )
 void Profiler::SendCallstackFrame( uint64_t ptr )
 {
 #ifdef TRACY_HAS_CALLSTACK
-    auto frame = DecodeCallstackPtr( ptr );
+    const auto frameData = DecodeCallstackPtr( ptr );
 
-    SendString( uint64_t( frame.name ), frame.name, QueueType::CustomStringData );
-    SendString( uint64_t( frame.file ), frame.file, QueueType::CustomStringData );
+    {
+        QueueItem item;
+        MemWrite( &item.hdr.type, QueueType::CallstackFrameSize );
+        MemWrite( &item.callstackFrameSize.ptr, ptr );
+        MemWrite( &item.callstackFrameSize.size, frameData.size );
 
-    QueueItem item;
-    MemWrite( &item.hdr.type, QueueType::CallstackFrame );
-    MemWrite( &item.callstackFrame.ptr, ptr );
-    MemWrite( &item.callstackFrame.name, (uint64_t)frame.name );
-    MemWrite( &item.callstackFrame.file, (uint64_t)frame.file );
-    MemWrite( &item.callstackFrame.line, frame.line );
+        AppendData( &item, QueueDataSize[(int)QueueType::CallstackFrameSize] );
+    }
 
-    AppendData( &item, QueueDataSize[(int)QueueType::CallstackFrame] );
+    for( uint8_t i=0; i<frameData.size; i++ )
+    {
+        const auto& frame = frameData.data[i];
 
-    tracy_free( (void*)frame.name );
-    tracy_free( (void*)frame.file );
+        SendString( uint64_t( frame.name ), frame.name, QueueType::CustomStringData );
+        SendString( uint64_t( frame.file ), frame.file, QueueType::CustomStringData );
+
+        QueueItem item;
+        MemWrite( &item.hdr.type, QueueType::CallstackFrame );
+        MemWrite( &item.callstackFrame.name, (uint64_t)frame.name );
+        MemWrite( &item.callstackFrame.file, (uint64_t)frame.file );
+        MemWrite( &item.callstackFrame.line, frame.line );
+
+        AppendData( &item, QueueDataSize[(int)QueueType::CallstackFrame] );
+
+        tracy_free( (void*)frame.name );
+        tracy_free( (void*)frame.file );
+    }
 #endif
 }
 
@@ -1720,10 +1733,13 @@ void Profiler::SendCallstack( int depth, uint64_t thread, const char* skipBefore
     uintptr_t i;
     for( i=0; i<sz; i++ )
     {
-        auto frame = DecodeCallstackPtr( uint64_t( data[i] ) );
-        const bool found = strcmp( frame.name, skipBefore ) == 0;
-        tracy_free( (void*)frame.name );
-        tracy_free( (void*)frame.file );
+        auto frameData = DecodeCallstackPtr( uint64_t( data[i] ) );
+        const bool found = strcmp( frameData.data[0].name, skipBefore ) == 0;
+        for( uint8_t j=0; j<frameData.size; j++ )
+        {
+            tracy_free( (void*)frameData.data[j].name );
+            tracy_free( (void*)frameData.data[j].file );
+        }
         if( found )
         {
             i++;
diff --git a/common/TracyProtocol.hpp b/common/TracyProtocol.hpp
index ec6b49a3..ed707f97 100644
--- a/common/TracyProtocol.hpp
+++ b/common/TracyProtocol.hpp
@@ -9,7 +9,7 @@
 namespace tracy
 {
 
-enum : uint32_t { ProtocolVersion = 2 };
+enum : uint32_t { ProtocolVersion = 3 };
 
 using lz4sz_t = uint32_t;
 
diff --git a/common/TracyQueue.hpp b/common/TracyQueue.hpp
index 0f77b532..848103d9 100644
--- a/common/TracyQueue.hpp
+++ b/common/TracyQueue.hpp
@@ -46,6 +46,7 @@ enum class QueueType : uint8_t
     MemFree,
     MemAllocCallstack,
     MemFreeCallstack,
+    CallstackFrameSize,
     CallstackFrame,
     StringData,
     ThreadName,
@@ -244,9 +245,14 @@ struct QueueCallstack
     uint64_t thread;
 };
 
-struct QueueCallstackFrame
+struct QueueCallstackFrameSize
 {
     uint64_t ptr;
+    uint8_t size;
+};
+
+struct QueueCallstackFrame
+{
     uint64_t name;
     uint64_t file;
     uint32_t line;
@@ -296,6 +302,7 @@ struct QueueItem
         QueueMemFree memFree;
         QueueCallstackMemory callstackMemory;
         QueueCallstack callstack;
+        QueueCallstackFrameSize callstackFrameSize;
         QueueCallstackFrame callstackFrame;
         QueueCrashReport crashReport;
     };
@@ -345,6 +352,7 @@ static const size_t QueueDataSize[] = {
     sizeof( QueueHeader ) + sizeof( QueueMemFree ),
     sizeof( QueueHeader ) + sizeof( QueueMemAlloc ),        // callstack
     sizeof( QueueHeader ) + sizeof( QueueMemFree ),         // callstack
+    sizeof( QueueHeader ) + sizeof( QueueCallstackFrameSize ),
     sizeof( QueueHeader ) + sizeof( QueueCallstackFrame ),
     // keep all QueueStringTransfer below
     sizeof( QueueHeader ) + sizeof( QueueStringTransfer ),  // string data
diff --git a/server/TracyEvent.hpp b/server/TracyEvent.hpp
index 50ce5adb..527c7cb8 100644
--- a/server/TracyEvent.hpp
+++ b/server/TracyEvent.hpp
@@ -171,6 +171,15 @@ struct CallstackFrame
 
 enum { CallstackFrameSize = sizeof( CallstackFrame ) };
 
+struct CallstackFrameData
+{
+    CallstackFrame* data;
+    uint8_t size;
+};
+
+enum { CallstackFrameDataSize = sizeof( CallstackFrameData ) };
+
+
 struct CallstackFrameTree
 {
     uint64_t frame;
diff --git a/server/TracyVersion.hpp b/server/TracyVersion.hpp
index aa28168d..92ec98d6 100644
--- a/server/TracyVersion.hpp
+++ b/server/TracyVersion.hpp
@@ -7,7 +7,7 @@ namespace Version
 {
 enum { Major = 0 };
 enum { Minor = 4 };
-enum { Patch = 2 };
+enum { Patch = 3 };
 }
 }
 
diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 8cc2364a..66c27b1e 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -3616,7 +3616,8 @@ void DrawZoneTrace( T zone, const std::vector<T>& trace, const Worker& worker, B
                 }
                 for( int8_t j=1; j<idx; j++ )
                 {
-                    auto frame = worker.GetCallstackFrame( prevCs[j] );
+                    auto frameData = worker.GetCallstackFrame( prevCs[j] );
+                    auto frame = frameData->data;
                     ImGui::TextDisabled( "%s", worker.GetString( frame->name ) );
                     ImGui::SameLine();
                     ImGui::Spacing();
@@ -3672,7 +3673,8 @@ void DrawZoneTrace( T zone, const std::vector<T>& trace, const Worker& worker, B
         const auto csz = cs.size();
         for( uint8_t i=1; i<csz; i++ )
         {
-            auto frame = worker.GetCallstackFrame( cs[i] );
+            auto frameData = worker.GetCallstackFrame( cs[i] );
+            auto frame = frameData->data;
             ImGui::TextDisabled( "%s", worker.GetString( frame->name ) );
             ImGui::SameLine();
             ImGui::Spacing();
@@ -5559,7 +5561,7 @@ void View::DrawFindZone()
                 else
                 {
                     auto& callstack = m_worker.GetCallstack( v->first );
-                    hdrString = m_worker.GetString( m_worker.GetCallstackFrame( *callstack.begin() )->name );
+                    hdrString = m_worker.GetString( m_worker.GetCallstackFrame( *callstack.begin() )->data[0].name );
                 }
                 break;
             default:
@@ -6463,14 +6465,11 @@ void View::DrawCallstackWindow()
     ImGui::NextColumn();
 
     int fidx = 0;
+    int bidx = 0;
     for( auto& entry : cs )
     {
-        ImGui::Separator();
-        ImGui::Text( "%i", fidx++ );
-        ImGui::NextColumn();
-
-        auto frame = m_worker.GetCallstackFrame( entry );
-        if( !frame )
+        auto frameData = m_worker.GetCallstackFrame( entry );
+        if( !frameData )
         {
             char buf[32];
             sprintf( buf, "%p", (void*)entry );
@@ -6484,64 +6483,81 @@ void View::DrawCallstackWindow()
         }
         else
         {
-            auto txt = m_worker.GetString( frame->name );
-            ImGui::TextWrapped( "%s", txt );
-            if( ImGui::IsItemClicked() )
+            for( uint8_t f=0; f<frameData->size; f++ )
             {
-                ImGui::SetClipboardText( txt );
-            }
-            ImGui::NextColumn();
-            ImGui::PushTextWrapPos( 0.0f );
-            float indentVal = 0.f;
-            if( m_callstackBuzzAnim.Match( fidx ) )
-            {
-                const auto time = m_callstackBuzzAnim.Time();
-                indentVal = sin( time * 60.f ) * 10.f * time;
-                ImGui::Indent( indentVal );
-            }
-            txt = m_worker.GetString( frame->file );
-            if( m_showCallstackFrameAddress )
-            {
-                ImGui::TextDisabled( "0x%" PRIx64, entry );
-                if( ImGui::IsItemClicked() )
+                const auto& frame = frameData->data[f];
+                bidx++;
+
+                ImGui::Separator();
+                if( f == 0 )
                 {
-                    char tmp[32];
-                    sprintf( tmp, "0x%" PRIx64, entry );
-                    ImGui::SetClipboardText( tmp );
-                }
-            }
-            else
-            {
-                if( frame->line == 0 )
-                {
-                    ImGui::TextDisabled( "%s", txt );
+                    ImGui::Text( "%i", fidx++ );
                 }
                 else
                 {
-                    ImGui::TextDisabled( "%s:%i", txt, frame->line );
+                    ImGui::TextDisabled( "inline" );
                 }
+                ImGui::NextColumn();
+
+                auto txt = m_worker.GetString( frame.name );
+                ImGui::TextWrapped( "%s", txt );
                 if( ImGui::IsItemClicked() )
                 {
                     ImGui::SetClipboardText( txt );
                 }
-            }
-            if( ImGui::IsItemClicked( 1 ) )
-            {
-                if( FileExists( txt ) )
+                ImGui::NextColumn();
+                ImGui::PushTextWrapPos( 0.0f );
+                float indentVal = 0.f;
+                if( m_callstackBuzzAnim.Match( bidx ) )
                 {
-                    SetTextEditorFile( txt, frame->line );
+                    const auto time = m_callstackBuzzAnim.Time();
+                    indentVal = sin( time * 60.f ) * 10.f * time;
+                    ImGui::Indent( indentVal );
+                }
+                txt = m_worker.GetString( frame.file );
+                if( m_showCallstackFrameAddress )
+                {
+                    ImGui::TextDisabled( "0x%" PRIx64, entry );
+                    if( ImGui::IsItemClicked() )
+                    {
+                        char tmp[32];
+                        sprintf( tmp, "0x%" PRIx64, entry );
+                        ImGui::SetClipboardText( tmp );
+                    }
                 }
                 else
                 {
-                    m_callstackBuzzAnim.Enable( fidx, 0.5f );
+                    if( frame.line == 0 )
+                    {
+                        ImGui::TextDisabled( "%s", txt );
+                    }
+                    else
+                    {
+                        ImGui::TextDisabled( "%s:%i", txt, frame.line );
+                    }
+                    if( ImGui::IsItemClicked() )
+                    {
+                        ImGui::SetClipboardText( txt );
+                    }
                 }
+                if( ImGui::IsItemClicked( 1 ) )
+                {
+                    if( FileExists( txt ) )
+                    {
+                        SetTextEditorFile( txt, frame.line );
+                    }
+                    else
+                    {
+                        m_callstackBuzzAnim.Enable( bidx, 0.5f );
+                    }
+                }
+                if( indentVal != 0.f )
+                {
+                    ImGui::Unindent( indentVal );
+                }
+                ImGui::PopTextWrapPos();
+                ImGui::NextColumn();
             }
-            if( indentVal != 0.f )
-            {
-                ImGui::Unindent( indentVal );
-            }
-            ImGui::PopTextWrapPos();
-            ImGui::NextColumn();
         }
     }
 
@@ -7910,7 +7926,7 @@ void View::DrawFrameTreeLevel( std::vector<CallstackFrameTree>& tree, int& idx )
     for( auto& v : tree )
     {
         idx++;
-        auto frame = m_worker.GetCallstackFrame( v.frame );
+        auto frame = m_worker.GetCallstackFrame( v.frame )->data;
         bool expand = false;
         if( v.children.empty() )
         {
@@ -8454,7 +8470,7 @@ void View::CallstackTooltip( uint32_t idx )
         }
         else
         {
-            ImGui::Text( "%s", m_worker.GetString( frame->name ) );
+            ImGui::Text( "%s", m_worker.GetString( frame->data->name ) );
         }
     }
     ImGui::EndTooltip();
diff --git a/server/TracyWorker.cpp b/server/TracyWorker.cpp
index e9961c39..59f64159 100644
--- a/server/TracyWorker.cpp
+++ b/server/TracyWorker.cpp
@@ -14,6 +14,7 @@
 #include <chrono>
 #include <mutex>
 #include <string.h>
+#include <inttypes.h>
 
 #if ( defined _MSC_VER && _MSVC_LANG >= 201703L ) || __cplusplus >= 201703L
 #  if __has_include(<execution>)
@@ -217,6 +218,8 @@ Worker::Worker( const char* addr )
     , m_pendingThreads( 0 )
     , m_pendingSourceLocation( 0 )
     , m_pendingCallstackFrames( 0 )
+    , m_pendingCallstackSubframes( 0 )
+    , m_callstackFrameStaging( nullptr )
     , m_traceVersion( CurrentVersion )
     , m_loadTime( 0 )
 {
@@ -1020,17 +1023,41 @@ Worker::Worker( FileRead& f, EventType::Type eventMask )
         m_data.callstackPayload.push_back_no_space_check( arr );
     }
 
-    f.Read( sz );
-    m_data.callstackFrameMap.reserve( sz );
-    for( uint64_t i=0; i<sz; i++ )
+    if( fileVer >= FileVersion( 0, 4, 3 ) )
     {
-        uint64_t ptr;
-        f.Read( ptr );
+        f.Read( sz );
+        m_data.callstackFrameMap.reserve( sz );
+        for( uint64_t i=0; i<sz; i++ )
+        {
+            uint64_t ptr;
+            f.Read( ptr );
 
-        auto frame = m_slab.Alloc<CallstackFrame>();
-        f.Read( frame, sizeof( CallstackFrame ) );
+            auto frameData = m_slab.Alloc<CallstackFrameData>();
+            f.Read( frameData->size );
 
-        m_data.callstackFrameMap.emplace( ptr, frame );
+            frameData->data = m_slab.Alloc<CallstackFrame>( frameData->size );
+            f.Read( frameData->data, sizeof( CallstackFrame ) * frameData->size );
+
+            m_data.callstackFrameMap.emplace( ptr, frameData );
+        }
+    }
+    else
+    {
+        f.Read( sz );
+        m_data.callstackFrameMap.reserve( sz );
+        for( uint64_t i=0; i<sz; i++ )
+        {
+            uint64_t ptr;
+            f.Read( ptr );
+
+            auto frameData = m_slab.Alloc<CallstackFrameData>();
+            frameData->size = 1;
+
+            frameData->data = m_slab.Alloc<CallstackFrame>();
+            f.Read( frameData->data, sizeof( CallstackFrame ) );
+
+            m_data.callstackFrameMap.emplace( ptr, frameData );
+        }
     }
 
 finishLoading:
@@ -1201,7 +1228,7 @@ std::pair <int, int> Worker::GetFrameRange( const FrameData& fd, int64_t from, i
     return std::make_pair( zbegin, zend );
 }
 
-const CallstackFrame* Worker::GetCallstackFrame( uint64_t ptr ) const
+const CallstackFrameData* Worker::GetCallstackFrame( uint64_t ptr ) const
 {
     auto it = m_data.callstackFrameMap.find( ptr );
     if( it == m_data.callstackFrameMap.end() )
@@ -1582,7 +1609,7 @@ void Worker::Exec()
         if( m_terminate )
         {
             if( m_pendingStrings != 0 || m_pendingThreads != 0 || m_pendingSourceLocation != 0 || m_pendingCallstackFrames != 0 ||
-                !m_pendingCustomStrings.empty() || m_data.plots.IsPending() || !m_pendingCallstacks.empty() )
+                !m_pendingCustomStrings.empty() || m_data.plots.IsPending() || !m_pendingCallstacks.empty() || m_pendingCallstackSubframes != 0 )
             {
                 continue;
             }
@@ -2197,6 +2224,9 @@ bool Worker::Process( const QueueItem& ev )
     case QueueType::Callstack:
         ProcessCallstack( ev.callstack );
         break;
+    case QueueType::CallstackFrameSize:
+        ProcessCallstackFrameSize( ev.callstackFrameSize );
+        break;
     case QueueType::CallstackFrame:
         ProcessCallstackFrame( ev.callstackFrame );
         break;
@@ -2961,28 +2991,53 @@ void Worker::ProcessCallstack( const QueueCallstack& ev )
     m_pendingCallstacks.erase( it );
 }
 
-void Worker::ProcessCallstackFrame( const QueueCallstackFrame& ev )
+void Worker::ProcessCallstackFrameSize( const QueueCallstackFrameSize& ev )
 {
+    assert( !m_callstackFrameStaging );
+    assert( m_pendingCallstackSubframes == 0 );
     assert( m_pendingCallstackFrames > 0 );
     m_pendingCallstackFrames--;
+    m_pendingCallstackSubframes = ev.size;
 
+    // Frames may be duplicated due to recursion
     auto fmit = m_data.callstackFrameMap.find( ev.ptr );
+    if( fmit == m_data.callstackFrameMap.end() )
+    {
+        m_callstackFrameStaging = m_slab.Alloc<CallstackFrameData>();
+        m_callstackFrameStaging->size = ev.size;
+        m_callstackFrameStaging->data = m_slab.Alloc<CallstackFrame>( ev.size );
+
+        m_callstackFrameStagingPtr = ev.ptr;
+    }
+}
+
+void Worker::ProcessCallstackFrame( const QueueCallstackFrame& ev )
+{
+    assert( m_pendingCallstackSubframes > 0 );
+
     auto nit = m_pendingCustomStrings.find( ev.name );
     assert( nit != m_pendingCustomStrings.end() );
     auto fit = m_pendingCustomStrings.find( ev.file );
     assert( fit != m_pendingCustomStrings.end() );
 
-    // Frames may be duplicated due to recursion
-    if( fmit == m_data.callstackFrameMap.end() )
+    if( m_callstackFrameStaging )
     {
-        CheckString( ev.file );
+        const auto idx = m_callstackFrameStaging->size - m_pendingCallstackSubframes;
 
-        auto frame = m_slab.Alloc<CallstackFrame>();
-        frame->name = StringIdx( nit->second.idx );
-        frame->file = StringIdx( fit->second.idx );
-        frame->line = ev.line;
+        m_callstackFrameStaging->data[idx].name = StringIdx( nit->second.idx );
+        m_callstackFrameStaging->data[idx].file = StringIdx( fit->second.idx );
+        m_callstackFrameStaging->data[idx].line = ev.line;
 
-        m_data.callstackFrameMap.emplace( ev.ptr, frame );
+        if( --m_pendingCallstackSubframes == 0 )
+        {
+            assert( m_data.callstackFrameMap.find( m_callstackFrameStagingPtr ) == m_data.callstackFrameMap.end() );
+            m_data.callstackFrameMap.emplace( m_callstackFrameStagingPtr, m_callstackFrameStaging );
+            m_callstackFrameStaging = nullptr;
+        }
+    }
+    else
+    {
+        m_pendingCallstackSubframes--;
     }
 
     m_pendingCustomStrings.erase( nit );
@@ -3622,7 +3677,8 @@ void Worker::Write( FileWrite& f )
     for( auto& frame : m_data.callstackFrameMap )
     {
         f.Write( &frame.first, sizeof( uint64_t ) );
-        f.Write( frame.second, sizeof( CallstackFrame ) );
+        f.Write( &frame.second->size, sizeof( frame.second->size ) );
+        f.Write( frame.second->data, sizeof( CallstackFrame ) * frame.second->size );
     }
 }
 
diff --git a/server/TracyWorker.hpp b/server/TracyWorker.hpp
index b6d1297f..f1712e39 100644
--- a/server/TracyWorker.hpp
+++ b/server/TracyWorker.hpp
@@ -130,7 +130,7 @@ private:
 
         flat_hash_map<VarArray<uint64_t>*, uint32_t, VarArrayHasherPOT<uint64_t>, VarArrayComparator<uint64_t>> callstackMap;
         Vector<VarArray<uint64_t>*> callstackPayload;
-        flat_hash_map<uint64_t, CallstackFrame*> callstackFrameMap;
+        flat_hash_map<uint64_t, CallstackFrameData*> callstackFrameMap;
 
         std::map<uint32_t, LockMap> lockMap;
 
@@ -229,7 +229,7 @@ public:
     const MemData& GetMemData() const { return m_data.memory; }
 
     const VarArray<uint64_t>& GetCallstack( uint32_t idx ) const { return *m_data.callstackPayload[idx]; }
-    const CallstackFrame* GetCallstackFrame( uint64_t ptr ) const;
+    const CallstackFrameData* GetCallstackFrame( uint64_t ptr ) const;
 
     const CrashEvent& GetCrashEvent() const { return m_data.m_crashEvent; }
 
@@ -331,6 +331,7 @@ private:
     tracy_force_inline void ProcessMemFreeCallstack( const QueueMemFree& ev );
     tracy_force_inline void ProcessCallstackMemory( const QueueCallstackMemory& ev );
     tracy_force_inline void ProcessCallstack( const QueueCallstack& ev );
+    tracy_force_inline void ProcessCallstackFrameSize( const QueueCallstackFrameSize& ev );
     tracy_force_inline void ProcessCallstackFrame( const QueueCallstackFrame& ev );
     tracy_force_inline void ProcessCrashReport( const QueueCrashReport& ev );
 
@@ -438,6 +439,10 @@ private:
     uint32_t m_pendingThreads;
     uint32_t m_pendingSourceLocation;
     uint32_t m_pendingCallstackFrames;
+    uint8_t m_pendingCallstackSubframes;
+
+    CallstackFrameData* m_callstackFrameStaging;
+    uint64_t m_callstackFrameStagingPtr;
 
     uint64_t m_lastMemActionCallstack;
     bool m_lastMemActionWasAlloc;