diff --git a/src/common/global.cpp b/src/common/global.cpp
index 51b4cff3..850ba453 100644
--- a/src/common/global.cpp
+++ b/src/common/global.cpp
@@ -75,6 +75,7 @@ ConVar* r_visualizetraces_duration         = nullptr;
 
 ConVar* gfx_nvnUseLowLatency               = nullptr;
 ConVar* gfx_nvnUseLowLatencyBoost          = nullptr;
+ConVar* gfx_nvnUseMarkersToOptimize        = nullptr;
 #endif // !DEDICATED
 
 ConVar* stream_overlay                     = nullptr;
@@ -337,8 +338,9 @@ void ConVar_StaticInit(void)
 	fps_max_rt_sleep_threshold = ConVar::StaticCreate("fps_max_rt_sleep_threshold", "0.016666667", FCVAR_RELEASE, "Frame limiter starts to sleep when frame time exceeds this threshold.", true, 0.f, false, 0.f, nullptr, nullptr);
 
 	fps_max_gfx = ConVar::StaticCreate("fps_max_gfx", "0", FCVAR_RELEASE, "Frame rate limiter using NVIDIA Reflex Low Latency SDK. -1 indicates use the desktop refresh. 0 is disabled.", true, -1.f, true, 295.f, &GFX_NVN_Changed_f, nullptr);
-	gfx_nvnUseLowLatency      = ConVar::StaticCreate("gfx_nvnUseLowLatency"     , "1", FCVAR_RELEASE | FCVAR_ARCHIVE, "Enables NVIDIA Reflex Low Latency SDK."  , false, 0.f, false, 0.f, &GFX_NVN_Changed_f, nullptr);
-	gfx_nvnUseLowLatencyBoost = ConVar::StaticCreate("gfx_nvnUseLowLatencyBoost", "0", FCVAR_RELEASE | FCVAR_ARCHIVE, "Enables NVIDIA Reflex Low Latency Boost.", false, 0.f, false, 0.f, &GFX_NVN_Changed_f, nullptr);
+	gfx_nvnUseLowLatency        = ConVar::StaticCreate("gfx_nvnUseLowLatency"       , "1", FCVAR_RELEASE | FCVAR_ARCHIVE, "Enables NVIDIA Reflex Low Latency SDK."  , false, 0.f, false, 0.f, &GFX_NVN_Changed_f, nullptr);
+	gfx_nvnUseLowLatencyBoost   = ConVar::StaticCreate("gfx_nvnUseLowLatencyBoost"  , "0", FCVAR_RELEASE | FCVAR_ARCHIVE, "Enables NVIDIA Reflex Low Latency Boost.", false, 0.f, false, 0.f, &GFX_NVN_Changed_f, nullptr);
+	gfx_nvnUseMarkersToOptimize = ConVar::StaticCreate("gfx_nvnUseMarkersToOptimize", "0", FCVAR_RELEASE | FCVAR_ARCHIVE, "Use NVIDIA Reflex Low Latency markers to optimize (requires Low Latency Boost to be enabled).", false, 0.f, false, 0.f, &GFX_NVN_Changed_f, nullptr);
 #endif // !DEDICATED
 
 	//-------------------------------------------------------------------------
diff --git a/src/common/global.h b/src/common/global.h
index 1c3a1ee3..3d546b56 100644
--- a/src/common/global.h
+++ b/src/common/global.h
@@ -66,6 +66,7 @@ extern ConVar* r_visualizetraces_duration;
 
 extern ConVar* gfx_nvnUseLowLatency;
 extern ConVar* gfx_nvnUseLowLatencyBoost;
+extern ConVar* gfx_nvnUseMarkersToOptimize;
 #endif // !DEDICATED
 
 extern ConVar* stream_overlay;
diff --git a/src/core/init.cpp b/src/core/init.cpp
index f1be0083..61c80dee 100644
--- a/src/core/init.cpp
+++ b/src/core/init.cpp
@@ -100,6 +100,7 @@
 #include "engine/sys_mainwind.h"
 #include "engine/matsys_interface.h"
 #include "engine/gl_matsysiface.h"
+#include "engine/gl_drawlights.h"
 #include "engine/gl_screen.h"
 #include "engine/gl_rsurf.h"
 #include "engine/debugoverlay.h"
@@ -581,6 +582,7 @@ void DetourRegister() // Register detour classes to be searched and hooked.
 	REGISTER(VGL_RMain);
 	REGISTER(VMatSys_Interface);
 	REGISTER(VGL_MatSysIFace);
+	REGISTER(VGL_DrawLights);
 	REGISTER(VGL_Screen);
 #endif // !DEDICATED
 
diff --git a/src/engine/CMakeLists.txt b/src/engine/CMakeLists.txt
index 4caac9d9..a27fa06f 100644
--- a/src/engine/CMakeLists.txt
+++ b/src/engine/CMakeLists.txt
@@ -29,6 +29,8 @@ add_sources( SOURCE_GROUP "Debug"
 add_sources( SOURCE_GROUP "Render"
     "framelimit.cpp"
     "framelimit.h"
+    "gl_drawlights.cpp"
+    "gl_drawlights.h"
     "gl_matsysiface.h"
     "gl_model_private.h"
     "gl_rmain.cpp"
diff --git a/src/engine/client/cdll_engine_int.cpp b/src/engine/client/cdll_engine_int.cpp
index 97f40254..c6acb0e4 100644
--- a/src/engine/client/cdll_engine_int.cpp
+++ b/src/engine/client/cdll_engine_int.cpp
@@ -18,12 +18,67 @@
 /*****************************************************************************/
 
 #ifndef DEDICATED
+//-----------------------------------------------------------------------------
+// Purpose: pre frame stage notify hook
+//-----------------------------------------------------------------------------
+void FrameStageNotify_Pre(const ClientFrameStage_t frameStage)
+{
+	switch (frameStage)
+	{
+	case ClientFrameStage_t::FRAME_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_POSTDATAUPDATE_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_POSTDATAUPDATE_END:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_END:
+		break;
+	case ClientFrameStage_t::FRAME_RENDER_START:
+		break;
+	case ClientFrameStage_t::FRAME_RENDER_END:
+		break;
+	case ClientFrameStage_t::FRAME_NET_FULL_FRAME_UPDATE_ON_REMOVE:
+		break;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: post frame stage notify hook
+//-----------------------------------------------------------------------------
+void FrameStageNotify_Post(const ClientFrameStage_t frameStage)
+{
+	switch (frameStage)
+	{
+	case ClientFrameStage_t::FRAME_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_POSTDATAUPDATE_START:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_POSTDATAUPDATE_END:
+		break;
+	case ClientFrameStage_t::FRAME_NET_UPDATE_END:
+		break;
+	case ClientFrameStage_t::FRAME_RENDER_START:
+		break;
+	case ClientFrameStage_t::FRAME_RENDER_END:
+		GFX_SetLatencyMarker(D3D11Device(), SIMULATION_END);
+		break;
+	case ClientFrameStage_t::FRAME_NET_FULL_FRAME_UPDATE_ON_REMOVE:
+		break;
+	}
+}
+
 //-----------------------------------------------------------------------------
 // Purpose: 
 //-----------------------------------------------------------------------------
 void CHLClient::FrameStageNotify(CHLClient* pHLClient, ClientFrameStage_t frameStage)
 {
+	FrameStageNotify_Pre(frameStage);
 	CHLClient_FrameStageNotify(pHLClient, frameStage);
+	FrameStageNotify_Post(frameStage);
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/engine/gl_drawlights.cpp b/src/engine/gl_drawlights.cpp
new file mode 100644
index 00000000..40b69635
--- /dev/null
+++ b/src/engine/gl_drawlights.cpp
@@ -0,0 +1,13 @@
+#include "gl_drawlights.h"
+
+
+void DrawLightSprites(void* unkType)
+{
+	v_DrawLightSprites(unkType);
+}
+
+void VGL_DrawLights::Detour(const bool bAttach) const
+{
+	// Enable if needed.
+	//DetourSetup(&v_DrawLightSprites, &DrawLightSprites, bAttach);
+}
diff --git a/src/engine/gl_drawlights.h b/src/engine/gl_drawlights.h
new file mode 100644
index 00000000..6194bbc6
--- /dev/null
+++ b/src/engine/gl_drawlights.h
@@ -0,0 +1,23 @@
+#pragma once
+
+inline CMemory p_DrawLightSprites;
+inline void(*v_DrawLightSprites)(void*);
+
+
+///////////////////////////////////////////////////////////////////////////////
+class VGL_DrawLights : public IDetour
+{
+	virtual void GetAdr(void) const
+	{
+		LogFunAdr("DrawLightSprites", p_DrawLightSprites.GetPtr());
+	}
+	virtual void GetFun(void) const
+	{
+		p_DrawLightSprites = g_GameDll.FindPatternSIMD("48 8B C4 55 57 48 8D 68 A1 48 81 EC ?? ?? ?? ?? 48 8B 15 ?? ?? ?? ??");
+		v_DrawLightSprites = p_DrawLightSprites.RCast<void(*)(void*)>();
+	}
+	virtual void GetVar(void) const { }
+	virtual void GetCon(void) const { }
+	virtual void Detour(const bool bAttach) const;
+};
+///////////////////////////////////////////////////////////////////////////////
diff --git a/src/engine/gl_rsurf.cpp b/src/engine/gl_rsurf.cpp
index 997a3ccc..695526b5 100644
--- a/src/engine/gl_rsurf.cpp
+++ b/src/engine/gl_rsurf.cpp
@@ -6,8 +6,16 @@
 //===========================================================================//
 #include "core/stdafx.h"
 #include "tier1/cvar.h"
+#include "windows/id3dx.h"
+#include "geforce/reflex.h"
 #include "engine/gl_rsurf.h"
 
+void* R_DrawDepthOfField(const float a1)
+{
+	GFX_SetLatencyMarker(D3D11Device(), RENDERSUBMIT_START);
+	return V_DrawDepthOfField(a1);
+}
+
 void* R_DrawWorldMeshes(void* baseEntity, void* renderContext, DrawWorldLists_t worldLists)
 {
 	if (r_drawWorldMeshes->GetBool())
@@ -34,6 +42,7 @@ void* R_DrawWorldMeshesDepthAtTheEnd(void* ptr1, void* ptr2, void* ptr3, DrawWor
 
 void VGL_RSurf::Detour(const bool bAttach) const
 {
+	DetourSetup(&V_DrawDepthOfField, &R_DrawDepthOfField, bAttach);
 	DetourSetup(&V_DrawWorldMeshes, &R_DrawWorldMeshes, bAttach);
 	DetourSetup(&V_DrawWorldMeshesDepthOnly, &R_DrawWorldMeshesDepthOnly, bAttach);
 	DetourSetup(&V_DrawWorldMeshesDepthAtTheEnd, &R_DrawWorldMeshesDepthAtTheEnd, bAttach);
diff --git a/src/engine/gl_rsurf.h b/src/engine/gl_rsurf.h
index ff793a41..902477e2 100644
--- a/src/engine/gl_rsurf.h
+++ b/src/engine/gl_rsurf.h
@@ -1,6 +1,9 @@
 #pragma once
 #include "public/ivrenderview.h"
 
+inline CMemory P_DrawDepthOfField;
+inline void*(*V_DrawDepthOfField)(const float a1);
+
 inline CMemory P_DrawWorldMeshes;
 inline void*(*V_DrawWorldMeshes)(void* baseEntity, void* renderContext, DrawWorldLists_t worldLists);
 
@@ -15,12 +18,14 @@ class VGL_RSurf : public IDetour
 {
 	virtual void GetAdr(void) const
 	{
+		LogFunAdr("R_DrawDepthOfField", P_DrawDepthOfField.GetPtr());
 		LogFunAdr("R_DrawWorldMeshes", P_DrawWorldMeshes.GetPtr());
 		LogFunAdr("R_DrawWorldMeshesDepthOnly", P_DrawWorldMeshesDepthOnly.GetPtr());
 		LogFunAdr("R_DrawWorldMeshesDepthAtTheEnd", P_DrawWorldMeshesDepthAtTheEnd.GetPtr());
 	}
 	virtual void GetFun(void) const
 	{
+		P_DrawDepthOfField = g_GameDll.FindPatternSIMD("48 83 EC 48 0F 28 E8");
 #if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
 		P_DrawWorldMeshes              = g_GameDll.FindPatternSIMD("48 8B C4 48 89 48 08 53 48 83 EC 70");
 #elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
@@ -29,6 +34,7 @@ class VGL_RSurf : public IDetour
 		P_DrawWorldMeshesDepthOnly     = g_GameDll.FindPatternSIMD("40 56 57 B8 ?? ?? ?? ??");
 		P_DrawWorldMeshesDepthAtTheEnd = g_GameDll.FindPatternSIMD("48 89 5C 24 ?? 48 89 74 24 ?? 57 48 83 EC 20 48 8B 0D ?? ?? ?? ?? 41 8B F9");
 
+		V_DrawDepthOfField             = P_DrawDepthOfField.RCast<void* (*)(const float)>();
 		V_DrawWorldMeshes              = P_DrawWorldMeshes.RCast<void* (*)(void*, void*, DrawWorldLists_t)>();                     /*48 8B C4 48 89 48 08 53 57 41 55*/
 		V_DrawWorldMeshesDepthOnly     = P_DrawWorldMeshesDepthOnly.RCast<void* (*)(void*, DrawWorldLists_t)>();                   /*40 56 57 B8 ?? ?? ?? ??*/
 		V_DrawWorldMeshesDepthAtTheEnd = P_DrawWorldMeshesDepthAtTheEnd.RCast<void* (*)(void*, void*, void*, DrawWorldLists_t)>(); /*48 89 5C 24 ?? 48 89 74 24 ? 57 48 83 EC 20 48 8B 0D ?? ?? ?? ?? 41 8B F9*/
diff --git a/src/engine/host.cpp b/src/engine/host.cpp
index ae5a8715..f605ce81 100644
--- a/src/engine/host.cpp
+++ b/src/engine/host.cpp
@@ -9,6 +9,8 @@
 #include "tier0/frametask.h"
 #include "engine/host.h"
 #ifndef DEDICATED
+#include "windows/id3dx.h"
+#include "geforce/reflex.h"
 #include "vgui/vgui_debugpanel.h"
 #endif // !DEDICATED
 
@@ -30,6 +32,23 @@ void CCommonHostState::SetWorldModel(model_t* pModel)
 	}
 }
 
+/*
+==================
+Host_CountRealTimePackets
+
+Counts the number of
+packets in non-prescaled
+clock frames (does not
+count for bots or Terminal
+Services environments)
+==================
+*/
+void Host_CountRealTimePackets()
+{
+	v_Host_CountRealTimePackets();
+	GFX_SetLatencyMarker(D3D11Device(), SIMULATION_START);
+}
+
 /*
 ==================
 _Host_RunFrame
@@ -77,6 +96,7 @@ void _Host_Error(const char* error, ...)
 void VHost::Detour(const bool bAttach) const
 {
 	DetourSetup(&v_Host_RunFrame, &_Host_RunFrame, bAttach);
+	DetourSetup(&v_Host_CountRealTimePackets, &Host_CountRealTimePackets, bAttach);
 
 #ifndef DEDICATED // Dedicated already logs this!
 	DetourSetup(&v_Host_Error, &_Host_Error, bAttach);
diff --git a/src/engine/host.h b/src/engine/host.h
index 1dce0e30..ec649ddc 100644
--- a/src/engine/host.h
+++ b/src/engine/host.h
@@ -4,8 +4,11 @@
 inline CMemory p_Host_RunFrame;
 inline void(*v_Host_RunFrame)(void* unused, float time);
 
-//inline CMemory p_Host_RunFrame_Render; // DEDICATED PATCH!
-//inline void(*v_Host_RunFrame_Render)(void);
+inline CMemory p_Host_RunFrame_Render;
+inline void(*v_Host_RunFrame_Render)(void);
+
+inline CMemory p_Host_CountRealTimePackets;
+inline void(*v_Host_CountRealTimePackets)(void);
 
 inline CMemory p_Host_ShouldRun;
 inline bool(*v_Host_ShouldRun)();
@@ -54,7 +57,8 @@ class VHost : public IDetour
 	virtual void GetAdr(void) const
 	{
 		LogFunAdr("_Host_RunFrame", p_Host_RunFrame.GetPtr());
-		//LogFunAdr("_Host_RunFrame_Render", p_Host_RunFrame_Render.GetPtr());
+		LogFunAdr("_Host_RunFrame_Render", p_Host_RunFrame_Render.GetPtr());
+		LogFunAdr("Host_CountRealTimePackets", p_Host_CountRealTimePackets.GetPtr());
 		LogFunAdr("Host_ShouldRun", p_Host_ShouldRun.GetPtr());
 		LogFunAdr("Host_Error", p_Host_Error.GetPtr());
 		//LogFunAdr("VCR_EnterPausedState", p_VCR_EnterPausedState.GetPtr());
@@ -69,16 +73,18 @@ class VHost : public IDetour
 	{
 		p_Host_RunFrame = g_GameDll.FindPatternSIMD("48 8B C4 48 89 58 18 48 89 70 20 F3 0F 11 48 ??");
 #if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
-		//p_Host_RunFrame_Render = g_GameDll.FindPatternSIMD("48 89 5C 24 ?? 57 48 83 EC 20 48 8B 1D ?? ?? ?? ?? 33 FF");
+		p_Host_RunFrame_Render = g_GameDll.FindPatternSIMD("48 89 5C 24 ?? 57 48 83 EC 20 48 8B 1D ?? ?? ?? ?? 33 FF");
 #elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
-		//p_Host_RunFrame_Render = g_GameDll.FindPatternSIMD("40 53 48 83 EC 20 48 8B 0D ?? ?? ?? ?? 48 85 C9 75 34");
+		p_Host_RunFrame_Render = g_GameDll.FindPatternSIMD("40 53 48 83 EC 20 48 8B 0D ?? ?? ?? ?? 48 85 C9 75 34");
 #endif
+		p_Host_CountRealTimePackets = g_GameDll.FindPatternSIMD("40 53 48 83 EC 30 65 48 8B 04 25 ?? ?? ?? ?? 33 DB");
 		p_Host_ShouldRun = g_GameDll.FindPatternSIMD("48 83 EC 28 48 8B 05 ?? ?? ?? ?? 83 78 6C 00 75 07 B0 01");
 		p_Host_Error = g_GameDll.FindPatternSIMD("48 89 4C 24 ?? 48 89 54 24 ?? 4C 89 44 24 ?? 4C 89 4C 24 ?? 53 57 48 81 EC ?? ?? ?? ??");
 		//p_VCR_EnterPausedState = g_GameDll.FindPatternSIMD("40 53 48 83 EC 20 65 48 8B 04 25 ?? ?? ?? ?? BB ?? ?? ?? ?? C6 05 ?? ?? ?? ?? ??");
 
 		v_Host_RunFrame = p_Host_RunFrame.RCast<void(*)(void*, float)>();
-		//v_Host_RunFrame_Render = p_Host_Error.RCast<void(*)(void)>();
+		v_Host_RunFrame_Render = p_Host_RunFrame_Render.RCast<void(*)(void)>();
+		v_Host_CountRealTimePackets = p_Host_CountRealTimePackets.RCast<void(*)(void)>();
 		v_Host_ShouldRun = p_Host_ShouldRun.RCast<bool(*)()>();
 		v_Host_Error = p_Host_Error.RCast<void(*)(const char*, ...)>();
 		//v_VCR_EnterPausedState = p_VCR_EnterPausedState.RCast<void(*)(void)>();
diff --git a/src/engine/sys_dll2.cpp b/src/engine/sys_dll2.cpp
index 46c583ee..d9dc35c2 100644
--- a/src/engine/sys_dll2.cpp
+++ b/src/engine/sys_dll2.cpp
@@ -190,6 +190,7 @@ bool CEngineAPI::MainLoop()
             {
                 const bool bUseLowLatencyMode = gfx_nvnUseLowLatency->GetBool();
                 const bool bUseLowLatencyBoost = gfx_nvnUseLowLatencyBoost->GetBool();
+                const bool bUseMarkersToOptimize = gfx_nvnUseMarkersToOptimize->GetBool();
 
                 float fpsMax = fps_max_gfx->GetFloat();
 
@@ -208,7 +209,7 @@ bool CEngineAPI::MainLoop()
                 }
 
                 GFX_UpdateLowLatencyParameters(D3D11Device(), bUseLowLatencyMode,
-                    bUseLowLatencyBoost, false, fpsMax);
+                    bUseLowLatencyBoost, bUseMarkersToOptimize, fpsMax);
             }
 
             GFX_RunLowLatencyFrame(D3D11Device());
diff --git a/src/materialsystem/cmaterialsystem.cpp b/src/materialsystem/cmaterialsystem.cpp
index 671dae11..851fcd79 100644
--- a/src/materialsystem/cmaterialsystem.cpp
+++ b/src/materialsystem/cmaterialsystem.cpp
@@ -12,12 +12,13 @@
 #include "engine/cmodel_bsp.h"
 #include "geforce/reflex.h"
 #ifndef MATERIALSYSTEM_NODX
+#include "windows/id3dx.h"
 #include "materialsystem/cmaterialglue.h"
 #endif // !MATERIALSYSTEM_NODX
 #include "materialsystem/cmaterialsystem.h"
 
 #ifndef MATERIALSYSTEM_NODX
-//PCLSTATS_DEFINE()
+PCLSTATS_DEFINE()
 #endif // MATERIALSYSTEM_NODX
 
 //-----------------------------------------------------------------------------
@@ -38,10 +39,10 @@ InitReturnVal_t CMaterialSystem::Init(CMaterialSystem* thisptr)
 	// Initialize as usual.
 	GFX_EnableLowLatencySDK(!CommandLine()->CheckParm("-gfx_nvnDisableLowLatency"));
 
-	//if (GFX_IsLowLatencySDKEnabled())
-	//{
-	//	PCLSTATS_INIT(0);
-	//}
+	if (GFX_IsLowLatencySDKEnabled())
+	{
+		PCLSTATS_INIT(0);
+	}
 
 	return CMaterialSystem__Init(thisptr);
 #endif
@@ -52,10 +53,10 @@ InitReturnVal_t CMaterialSystem::Init(CMaterialSystem* thisptr)
 //-----------------------------------------------------------------------------
 int CMaterialSystem::Shutdown(CMaterialSystem* thisptr)
 {
-	//if (GFX_IsLowLatencySDKEnabled())
-	//{
-	//	PCLSTATS_SHUTDOWN();
-	//}
+	if (GFX_IsLowLatencySDKEnabled())
+	{
+		PCLSTATS_SHUTDOWN();
+	}
 
 	return CMaterialSystem__Shutdown(thisptr);
 }
@@ -108,9 +109,21 @@ void* __fastcall DispatchDrawCall(int64_t a1, uint64_t a2, int a3, int a4, int64
 	return v_DispatchDrawCall(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14);
 #endif
 }
-#endif // !MATERIALSYSTEM_NODX
 
-#ifndef MATERIALSYSTEM_NODX
+//---------------------------------------------------------------------------------
+// Purpose: run IDXGISwapChain::Present
+//---------------------------------------------------------------------------------
+ssize_t SpinPresent(void)
+{
+	GFX_SetLatencyMarker(D3D11Device(), RENDERSUBMIT_END);
+
+	GFX_SetLatencyMarker(D3D11Device(), PRESENT_START);
+	const ssize_t val = v_SpinPresent();
+	GFX_SetLatencyMarker(D3D11Device(), PRESENT_END);
+
+	return val;
+}
+
 //-----------------------------------------------------------------------------
 // Purpose: finds a material
 // Input  : *pMatSys - 
@@ -154,6 +167,7 @@ void VMaterialSystem::Detour(const bool bAttach) const
 #ifndef MATERIALSYSTEM_NODX
 	DetourSetup(&v_StreamDB_Init, &StreamDB_Init, bAttach);
 	DetourSetup(&v_DispatchDrawCall, &DispatchDrawCall, bAttach);
+	DetourSetup(&v_SpinPresent, &SpinPresent, bAttach);
 	DetourSetup(&CMaterialSystem__FindMaterialEx, &CMaterialSystem::FindMaterialEx, bAttach);
 #endif // !MATERIALSYSTEM_NODX
 }
diff --git a/src/materialsystem/cmaterialsystem.h b/src/materialsystem/cmaterialsystem.h
index f2422631..1058ca96 100644
--- a/src/materialsystem/cmaterialsystem.h
+++ b/src/materialsystem/cmaterialsystem.h
@@ -75,6 +75,9 @@ inline void*(*v_DispatchDrawCall)(int64_t a1, uint64_t a2, int a3, int a4, char
 inline CMemory p_DispatchDrawCall;
 inline void*(*v_DispatchDrawCall)(int64_t a1, uint64_t a2, int a3, int a4, int64_t a5, int a6, uint8_t a7, int64_t a8, uint32_t a9, uint32_t a10, int a11, __m128* a12, int a13, int64_t a14);
 #endif
+inline CMemory p_SpinPresent;
+inline ssize_t(*v_SpinPresent)(void);
+
 inline CMemory p_GetStreamOverlay;
 inline void(*v_GetStreamOverlay)(const char* mode, char* buf, size_t bufSize);
 
@@ -100,9 +103,10 @@ class VMaterialSystem : public IDetour
 #ifndef MATERIALSYSTEM_NODX
 		LogFunAdr("CMaterialSystem::FindMaterialEx", p_CMaterialSystem__FindMaterialEx.GetPtr());
 		LogFunAdr("CMaterialSystem::GetScreenSize", p_CMaterialSystem_GetScreenSize.GetPtr());
-		LogFunAdr("CMaterialSystem::DispatchDrawCall", p_DispatchDrawCall.GetPtr());
 		LogFunAdr("CMaterialSystem::GetStreamOverlay", p_GetStreamOverlay.GetPtr());
 		LogFunAdr("CMaterialSystem::DrawStreamOverlay", p_DrawStreamOverlay.GetPtr());
+		LogFunAdr("DispatchDrawCall", p_DispatchDrawCall.GetPtr());
+		LogFunAdr("SpinPresent", p_SpinPresent.GetPtr());
 		LogVarAdr("g_nTotalStreamingTextureMemory", reinterpret_cast<uintptr_t>(g_nTotalStreamingTextureMemory));
 		LogVarAdr("g_nUnfreeStreamingTextureMemory", reinterpret_cast<uintptr_t>(g_nUnfreeStreamingTextureMemory));
 		LogVarAdr("g_nUnusableStreamingTextureMemory", reinterpret_cast<uintptr_t>(g_nUnusableStreamingTextureMemory));
@@ -134,6 +138,9 @@ class VMaterialSystem : public IDetour
 		p_DispatchDrawCall = g_GameDll.FindPatternSIMD("44 89 4C 24 ?? 44 89 44 24 ?? 48 89 4C 24 ?? 55 53 56");
 		v_DispatchDrawCall = p_DispatchDrawCall.RCast<void*(*)(int64_t, uint64_t, int, int, int64_t, int, uint8_t, int64_t, uint32_t, uint32_t, int, __m128*, int, int64_t )>();
 #endif
+		p_SpinPresent = g_GameDll.FindPatternSIMD("48 89 5C 24 ?? 48 89 74 24 ?? 57 48 81 EC ?? ?? ?? ?? 8B 15 ?? ?? ?? ??");
+		v_SpinPresent = p_SpinPresent.RCast<ssize_t(*)(void)>();
+
 		p_GetStreamOverlay = g_GameDll.FindPatternSIMD("E8 ?? ?? ?? ?? 80 7C 24 ?? ?? 0F 84 ?? ?? ?? ?? 48 89 9C 24 ?? ?? ?? ??").FollowNearCallSelf();
 		v_GetStreamOverlay = p_GetStreamOverlay.RCast<void(*)(const char*, char*, size_t)>(); /*E8 ? ? ? ? 80 7C 24 ? ? 0F 84 ? ? ? ? 48 89 9C 24 ? ? ? ?*/