diff --git a/opencl/test/unit_test/device/sub_device_tests.cpp b/opencl/test/unit_test/device/sub_device_tests.cpp
index f0262cc046..37bec39edd 100644
--- a/opencl/test/unit_test/device/sub_device_tests.cpp
+++ b/opencl/test/unit_test/device/sub_device_tests.cpp
@@ -394,6 +394,7 @@ TEST_F(EngineInstancedDeviceTests, givenDebugFlagSetAndMoreThanOneCcsWhenCreatin
     constexpr uint32_t genericDevicesCount = 1;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
     DebugManager.flags.AllowSingleTileEngineInstancedSubDevices.set(true);
 
     if (!createDevices(genericDevicesCount, ccsCount)) {
@@ -517,6 +518,8 @@ TEST_F(EngineInstancedDeviceTests, givenDebugFlagSetWhenCreatingRootDeviceWithGe
     constexpr uint32_t genericDevicesCount = 2;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
+
     if (!createDevices(genericDevicesCount, ccsCount)) {
         GTEST_SKIP();
     }
@@ -568,6 +571,8 @@ TEST_F(EngineInstancedDeviceTests, givenMultipleSubDevicesWhenCallingGetSubDevic
     constexpr uint32_t genericDevicesCount = 2;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
+
     if (!createDevices(genericDevicesCount, ccsCount)) {
         GTEST_SKIP();
     }
@@ -621,6 +626,8 @@ TEST_F(EngineInstancedDeviceTests, givenMultipleClSubDevicesWhenCallingGetSubDev
     constexpr uint32_t genericDevicesCount = 2;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
+
     if (!createDevices(genericDevicesCount, ccsCount)) {
         GTEST_SKIP();
     }
@@ -646,6 +653,7 @@ TEST_F(EngineInstancedDeviceTests, givenAffinityMaskSetWhenCreatingDevicesThenFi
                                                    {false, false, false, false},
                                                    {false, false, true, true}};
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
     DebugManager.flags.ZE_AFFINITY_MASK.set("0.0.0, 0.0.1, 0.0.2, 0.2.2, 0.2.3, 0.1.5");
 
     if (!createDevices(genericDevicesCount, ccsCount)) {
@@ -693,6 +701,7 @@ TEST_F(EngineInstancedDeviceTests, givenAffinityMaskForSingle3rdLevelDeviceWhenC
     constexpr uint32_t create2ndLevelAsEngineInstanced[2] = {false, true};
     constexpr uint32_t engineInstanced2ndLevelEngineIndex = 1;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
     DebugManager.flags.ZE_AFFINITY_MASK.set("0.0, 0.1.1");
 
     if (!createDevices(genericDevicesCount, ccsCount)) {
@@ -802,6 +811,7 @@ TEST_F(EngineInstancedDeviceTests, givenAffinityMaskForSecondLevelOnSingleTileDe
     constexpr uint32_t genericDevicesCount = 1;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
     DebugManager.flags.AllowSingleTileEngineInstancedSubDevices.set(true);
 
     DebugManager.flags.ZE_AFFINITY_MASK.set("0.0, 0.4");
@@ -821,6 +831,7 @@ TEST_F(EngineInstancedDeviceTests, givenAffinityMaskForSecondLevelOnSingleTileDe
     constexpr uint32_t genericDevicesCount = 1;
     constexpr uint32_t ccsCount = 1;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
     DebugManager.flags.AllowSingleTileEngineInstancedSubDevices.set(true);
 
     DebugManager.flags.ZE_AFFINITY_MASK.set("0.0");
@@ -873,6 +884,8 @@ TEST_F(EngineInstancedDeviceTests, givenAffinityMaskWhenCreatingClSubDevicesThen
 HWTEST2_F(EngineInstancedDeviceTests, givenEngineInstancedDeviceWhenProgrammingCfeStateThenSetSingleSliceDispatch, IsAtLeastXeHpCore) {
     using CFE_STATE = typename FamilyType::CFE_STATE;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
+
     constexpr uint32_t genericDevicesCount = 1;
     constexpr uint32_t ccsCount = 2;
 
@@ -902,6 +915,8 @@ HWTEST_F(EngineInstancedDeviceTests, givenEngineInstancedDeviceWhenCreatingProgr
     constexpr uint32_t genericDevicesCount = 2;
     constexpr uint32_t ccsCount = 2;
 
+    DebugManager.flags.EngineInstancedSubDevices.set(true);
+
     if (!createDevices(genericDevicesCount, ccsCount)) {
         GTEST_SKIP();
     }
diff --git a/opencl/test/unit_test/test_files/igdrcl.config b/opencl/test/unit_test/test_files/igdrcl.config
index 3b3d8715bf..bc37cf08a2 100644
--- a/opencl/test/unit_test/test_files/igdrcl.config
+++ b/opencl/test/unit_test/test_files/igdrcl.config
@@ -251,7 +251,7 @@ DeferOsContextInitialization = -1
 DebuggerOptDisable = -1
 ExperimentalEnableCustomLocalMemoryAlignment = 0
 AlignLocalMemoryVaTo2MB = -1
-EngineInstancedSubDevices = 1
+EngineInstancedSubDevices = 0
 OverrideTimestampPacketSize = -1
 CFEComputeOverdispatchDisable = -1
 CFEWeightedDispatchModeDisable = -1
diff --git a/shared/source/debug_settings/debug_variables_base.inl b/shared/source/debug_settings/debug_variables_base.inl
index 4cc9b3d28b..258de5b3bc 100644
--- a/shared/source/debug_settings/debug_variables_base.inl
+++ b/shared/source/debug_settings/debug_variables_base.inl
@@ -261,7 +261,7 @@ DECLARE_DEBUG_VARIABLE(bool, EnableExtendedVaFormats, false, "Enable more format
 DECLARE_DEBUG_VARIABLE(bool, EnableFormatQuery, true, "Enable sharing format querying")
 DECLARE_DEBUG_VARIABLE(bool, EnableFreeMemory, false, "Enable freeMemory in memory manager")
 DECLARE_DEBUG_VARIABLE(bool, ForceSamplerLowFilteringPrecision, false, "Force Low Filtering Precision Sampler mode")
-DECLARE_DEBUG_VARIABLE(bool, EngineInstancedSubDevices, true, "Create subdevices assigned to specific engine")
+DECLARE_DEBUG_VARIABLE(bool, EngineInstancedSubDevices, false, "Create subdevices assigned to specific engine")
 DECLARE_DEBUG_VARIABLE(bool, AllowSingleTileEngineInstancedSubDevices, false, "Create subdevices assigned to specific engine on single tile config")
 DECLARE_DEBUG_VARIABLE(int32_t, AddClGlSharing, -1, "Add cl-gl extension")
 DECLARE_DEBUG_VARIABLE(int32_t, EnableKernelTunning, -1, "Perform a tunning of enqueue kernel, -1:default(disabled), 0:disable, 1:enable simple kernel tunning, 2:enable full kernel tunning")