diff --git a/src/CxbxKrnl/EmuXapi.cpp b/src/CxbxKrnl/EmuXapi.cpp
index 6b4583b91..3ff9b16d5 100644
--- a/src/CxbxKrnl/EmuXapi.cpp
+++ b/src/CxbxKrnl/EmuXapi.cpp
@@ -118,39 +118,6 @@ DWORD WINAPI XTL::EmuGetTimeZoneInformation
 	RETURN(dwRet);
 }
 
-// ******************************************************************
-// * func: EmuQueryPerformanceCounter
-// ******************************************************************
-BOOL WINAPI XTL::EmuQueryPerformanceCounter
-(
-    PLARGE_INTEGER lpPerformanceCount
-)
-{
-	LOG_FUNC_ONE_ARG(lpPerformanceCount);
-
-    BOOL bRet = QueryPerformanceCounter(lpPerformanceCount);
-
-    // debug - 4x speed
-    //lpPerformanceCount->QuadPart *= 4;
-
-	RETURN(bRet);
-}
-
-// ******************************************************************
-// * func: EmuQueryPerformanceFrequency
-// ******************************************************************
-BOOL WINAPI XTL::EmuQueryPerformanceFrequency
-(
-    PLARGE_INTEGER lpFrequency
-)
-{
-	LOG_FUNC_ONE_ARG(lpFrequency);
-
-    BOOL bRet = QueryPerformanceFrequency(lpFrequency);
-
-	RETURN(bRet);
-}
-
 // ******************************************************************
 // * func: EmuXMountUtilityDrive
 // ******************************************************************
diff --git a/src/CxbxKrnl/EmuXapi.h b/src/CxbxKrnl/EmuXapi.h
index 6f1faf1be..99c9de0ef 100644
--- a/src/CxbxKrnl/EmuXapi.h
+++ b/src/CxbxKrnl/EmuXapi.h
@@ -392,22 +392,6 @@ SIZE_T WINAPI EmuRtlSizeHeap
     IN PVOID  lpMem
 );
 
-// ******************************************************************
-// * func: EmuQueryPerformanceCounter
-// ******************************************************************
-BOOL WINAPI EmuQueryPerformanceCounter
-(
-    PLARGE_INTEGER lpPerformanceCount
-);
-
-// ******************************************************************
-// * func: EmuQueryPerformanceCounter
-// ******************************************************************
-BOOL WINAPI EmuQueryPerformanceFrequency
-(
-    PLARGE_INTEGER lpFrequency
-);
-
 // ******************************************************************
 // * func: EmuXMountUtilityDrive
 // ******************************************************************
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4134.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4134.inl
index 571eb9e98..354b8015b 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4134.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4134.inl
@@ -334,10 +334,6 @@ OOVPATable XAPI_1_0_4134[] = {
 	OOVPA_TABLE_PATCH(XInputGetCapabilities_1_0_3911, XTL::EmuXInputGetCapabilities),
 	// GetThreadPriority (* unchanged since 3911 *)
 	OOVPA_TABLE_PATCH(GetThreadPriority_1_0_3911, XTL::EmuGetThreadPriority),
-	// QueryPerformanceCounter
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4134, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4134, XTL::EmuQueryPerformanceFrequency),
 	// XInputPoll
 	OOVPA_TABLE_PATCH(XInputPoll_1_0_4134, XTL::EmuXInputPoll),
 	// SetThreadPriorityBoost (* unchanged since 3911 *)
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4361.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4361.inl
index a684fb818..18c6753d6 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4361.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4361.inl
@@ -428,10 +428,6 @@ OOVPA_END;
 // ******************************************************************
 OOVPATable XAPI_1_0_4361[] = {
 
-    // QueryPerformanceCounter
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4361, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4361, XTL::EmuQueryPerformanceFrequency),
     // XInitDevices (* unchanged since 1.0.3911 *)
 	OOVPA_TABLE_PATCH(XInitDevices_1_0_3911, XTL::EmuXInitDevices),
     // XGetDevices (* unchanged since 4134 *)
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4627.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4627.inl
index 453d2e61b..73552c16e 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4627.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.4627.inl
@@ -748,10 +748,6 @@ OOVPATable XAPI_1_0_4627[] = {
 	OOVPA_TABLE_PATCH(GetThreadPriority_1_0_4627, XTL::EmuGetThreadPriority),
     // XRegisterThreadNotifyRoutine (* unchanged since 3911 *)
 	OOVPA_TABLE_PATCH(XRegisterThreadNotifyRoutine_1_0_3911, XTL::EmuXRegisterThreadNotifyRoutine),
-	// QueryPerformanceCounter (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4361, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4361, XTL::EmuQueryPerformanceFrequency),
     // XMountUtilityDrive (* unchanged since 4432 *)
 	OOVPA_TABLE_PATCH(XMountUtilityDrive_1_0_4432, XTL::EmuXMountUtilityDrive),
     // XInitDevices (* unchanged since 1.0.3911 *)
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5233.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5233.inl
index 2829b7eb0..2a07692bb 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5233.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5233.inl
@@ -121,10 +121,6 @@ OOVPATable XAPI_1_0_5233[] = {
 	OOVPA_TABLE_PATCH(GetThreadPriority_1_0_4627, XTL::EmuGetThreadPriority),
     // XRegisterThreadNotifyRoutine (* unchanged since 3911 *)
 	OOVPA_TABLE_PATCH(XRegisterThreadNotifyRoutine_1_0_3911, XTL::EmuXRegisterThreadNotifyRoutine),
-	// QueryPerformanceCounter (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4361, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4361, XTL::EmuQueryPerformanceFrequency),
     // XMountUtilityDrive (* unchanged since 4432 *)
 	OOVPA_TABLE_PATCH(XMountUtilityDrive_1_0_4432, XTL::EmuXMountUtilityDrive),
     // XInitDevices
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5558.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5558.inl
index 9cc0429df..71f7e31aa 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5558.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5558.inl
@@ -337,10 +337,6 @@ OOVPATable XAPI_1_0_5558[] = {
 	OOVPA_TABLE_PATCH(SetThreadPriority_1_0_3911, XTL::EmuSetThreadPriority),
     // XRegisterThreadNotifyRoutine (* unchanged since 3911 *)
 	OOVPA_TABLE_PATCH(XRegisterThreadNotifyRoutine_1_0_3911, XTL::EmuXRegisterThreadNotifyRoutine),
-	// QueryPerformanceCounter (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4361, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4361, XTL::EmuQueryPerformanceFrequency),
     // XMountUtilityDrive (* unchanged since 4432 *)
 	OOVPA_TABLE_PATCH(XMountUtilityDrive_1_0_4432, XTL::EmuXMountUtilityDrive),
     // XInitDevices (* unchanged since 5233 *)
diff --git a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5849.inl b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5849.inl
index 512d1431f..5fc1e4433 100644
--- a/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5849.inl
+++ b/src/CxbxKrnl/HLEDataBase/Xapi.1.0.5849.inl
@@ -149,10 +149,6 @@ OOVPATable XAPI_1_0_5849[] = {
 
     // SetThreadPriority (* unchanged since 3911 *)
 	OOVPA_TABLE_PATCH(SetThreadPriority_1_0_3911, XTL::EmuSetThreadPriority),
-	// QueryPerformanceCounter (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceCounter_1_0_4361, XTL::EmuQueryPerformanceCounter),
-	// QueryPerformanceFrequency (* unchanged since 4361 *)
-	OOVPA_TABLE_PATCH(QueryPerformanceFrequency_1_0_4361, XTL::EmuQueryPerformanceFrequency),
     // XMountUtilityDrive (* unchanged since 4432 *)
 	OOVPA_TABLE_PATCH(XMountUtilityDrive_1_0_4432, XTL::EmuXMountUtilityDrive),
     // XInitDevices (* unchanged since 5233 *)