diff --git a/server/TracyTimelineController.cpp b/server/TracyTimelineController.cpp
index 569f1b50..50ac01ea 100644
--- a/server/TracyTimelineController.cpp
+++ b/server/TracyTimelineController.cpp
@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <thread>
 
 #include "TracyTimelineItem.hpp"
 #include "TracyTimelineContext.hpp"
@@ -16,6 +17,11 @@ TimelineController::TimelineController( View& view, Worker& worker )
     , m_firstFrame( true )
     , m_view( view )
     , m_worker( worker )
+#ifdef __EMSCRIPTEN__
+    , m_td( 1 )
+#else
+    , m_td( std::max( 1u, std::thread::hardware_concurrency() - 2 ) )
+#endif
 {
 }
 
@@ -131,9 +137,10 @@ void TimelineController::End( double pxns, const ImVec2& wpos, bool hover, bool
     {
         if( item->WantPreprocess() && item->IsVisible() )
         {
-            item->Preprocess( ctx );
+            item->Preprocess( ctx, m_td );
         }
     }
+    m_td.Sync();
 
     int yOffset = 0;
 
diff --git a/server/TracyTimelineController.hpp b/server/TracyTimelineController.hpp
index 8d9ac007..d63abc60 100644
--- a/server/TracyTimelineController.hpp
+++ b/server/TracyTimelineController.hpp
@@ -6,6 +6,7 @@
 #include <vector>
 
 #include "TracyImGui.hpp"
+#include "TracyTaskDispatch.hpp"
 #include "../public/common/TracyForceInline.hpp"
 #include "tracy_robin_hood.h"
 
@@ -61,6 +62,8 @@ private:
 
     View& m_view;
     Worker& m_worker;
+
+    TaskDispatch m_td;
 };
 
 }
diff --git a/server/TracyTimelineItem.hpp b/server/TracyTimelineItem.hpp
index d7182eea..155bbcf1 100644
--- a/server/TracyTimelineItem.hpp
+++ b/server/TracyTimelineItem.hpp
@@ -10,6 +10,7 @@ namespace tracy
 {
 
 struct TimelineContext;
+class TaskDispatch;
 class View;
 class Worker;
 
@@ -23,7 +24,7 @@ public:
     void Draw( bool firstFrame, const TimelineContext& ctx, int yOffset );
 
     bool WantPreprocess() const { return m_wantPreprocess; }
-    virtual void Preprocess( const TimelineContext& ctx ) { assert( false ); }
+    virtual void Preprocess( const TimelineContext& ctx, TaskDispatch& td ) { assert( false ); }
 
     void VisibilityCheckbox();
     virtual void SetVisible( bool visible ) { m_visible = visible; }
diff --git a/server/TracyTimelineItemThread.cpp b/server/TracyTimelineItemThread.cpp
index 17508cdc..9c2b9390 100644
--- a/server/TracyTimelineItemThread.cpp
+++ b/server/TracyTimelineItemThread.cpp
@@ -277,20 +277,22 @@ void TimelineItemThread::DrawFinished()
     m_draw.clear();
 }
 
-void TimelineItemThread::Preprocess( const TimelineContext& ctx )
+void TimelineItemThread::Preprocess( const TimelineContext& ctx, TaskDispatch& td )
 {
     assert( m_draw.empty() );
 
+    td.Queue( [this, &ctx] {
 #ifndef TRACY_NO_STATISTICS
-    if( m_worker.AreGhostZonesReady() && ( m_ghost || ( m_view.GetViewData().ghostZones && m_thread->timeline.empty() ) ) )
-    {
-        m_depth = PreprocessGhostLevel( ctx, m_thread->ghostZones, 0 );
-    }
-    else
+        if( m_worker.AreGhostZonesReady() && ( m_ghost || ( m_view.GetViewData().ghostZones && m_thread->timeline.empty() ) ) )
+        {
+            m_depth = PreprocessGhostLevel( ctx, m_thread->ghostZones, 0 );
+        }
+        else
 #endif
-    {
-        m_depth = PreprocessZoneLevel( ctx, m_thread->timeline, 0 );
-    }
+        {
+            m_depth = PreprocessZoneLevel( ctx, m_thread->timeline, 0 );
+        }
+    } );
 }
 
 #ifndef TRACY_NO_STATISTICS
diff --git a/server/TracyTimelineItemThread.hpp b/server/TracyTimelineItemThread.hpp
index 50e07db3..1d38e632 100644
--- a/server/TracyTimelineItemThread.hpp
+++ b/server/TracyTimelineItemThread.hpp
@@ -31,7 +31,7 @@ protected:
 
     bool IsEmpty() const override;
 
-    void Preprocess( const TimelineContext& ctx ) override;
+    void Preprocess( const TimelineContext& ctx, TaskDispatch& td ) override;
 
 private:
 #ifndef TRACY_NO_STATISTICS