diff --git a/OmniScaler/Config.h b/OmniScaler/Config.h
index 3f6bd86c..2e8f2620 100644
--- a/OmniScaler/Config.h
+++ b/OmniScaler/Config.h
@@ -97,6 +97,7 @@ public:
 	NVNGX_Api Api = NVNGX_NOT_SELECTED;
 	NVSDK_NGX_LoggingInfo NVSDK_Logger{ nullptr, NVSDK_NGX_LOGGING_LEVEL_OFF, false };
 	IFeature* CurrentFeature = nullptr;
+	int ActiveFeatureCount = 0;
 
 	// for realtime changes
 	bool changeBackend = false;
diff --git a/OmniScaler/NVNGX_DLSS_Dx11.cpp b/OmniScaler/NVNGX_DLSS_Dx11.cpp
index 7f53d3c8..b306eaf7 100644
--- a/OmniScaler/NVNGX_DLSS_Dx11.cpp
+++ b/OmniScaler/NVNGX_DLSS_Dx11.cpp
@@ -91,6 +91,7 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D11_Shutdown(void)
 
 	Dx11Contexts.clear();
 	D3D11Device = nullptr;
+	Config::Instance()->ActiveFeatureCount = 0;
 
 	return NVSDK_NGX_Result_Success;
 }
@@ -240,7 +241,10 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D11_CreateFeature(ID3D11DeviceContext
 	}
 
 	if (deviceContext->Init(D3D11Device, InDevCtx, InParameters))
+	{
+		Config::Instance()->ActiveFeatureCount++;
 		return NVSDK_NGX_Result_Success;
+	}
 
 	spdlog::error("NVSDK_NGX_D3D11_CreateFeature: CreateFeature failed");
 	return NVSDK_NGX_Result_Fail;
@@ -264,6 +268,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D11_ReleaseFeature(NVSDK_NGX_Handle*
 		Dx11Contexts.erase(it);
 	}
 
+	Config::Instance()->ActiveFeatureCount--;
+
 	return NVSDK_NGX_Result_Success;
 }
 
diff --git a/OmniScaler/NVNGX_DLSS_Dx12.cpp b/OmniScaler/NVNGX_DLSS_Dx12.cpp
index 9843d9a4..9849a77b 100644
--- a/OmniScaler/NVNGX_DLSS_Dx12.cpp
+++ b/OmniScaler/NVNGX_DLSS_Dx12.cpp
@@ -296,9 +296,10 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_Shutdown(void)
 		NVSDK_NGX_D3D12_ReleaseFeature(val->Handle());
 
 	Dx12Contexts.clear();
-
 	D3D12Device = nullptr;
 
+	Config::Instance()->ActiveFeatureCount = 0;
+
 	UnhookAll();
 
 	return NVSDK_NGX_Result_Success;
@@ -475,6 +476,7 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_CreateFeature(ID3D12GraphicsComma
 
 	if (deviceContext->Init(D3D12Device, InParameters))
 	{
+		Config::Instance()->ActiveFeatureCount++;
 		HookToCommandList(InCmdList);
 		return NVSDK_NGX_Result_Success;
 	}
@@ -500,6 +502,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_ReleaseFeature(NVSDK_NGX_Handle*
 	else
 		spdlog::error("NVSDK_NGX_D3D12_ReleaseFeature can't release feature with id {0}!", handleId);
 
+	Config::Instance()->ActiveFeatureCount--;
+
 	return NVSDK_NGX_Result_Success;
 }
 
diff --git a/OmniScaler/NVNGX_DLSS_Vk.cpp b/OmniScaler/NVNGX_DLSS_Vk.cpp
index 2f31c6a1..296c4f04 100644
--- a/OmniScaler/NVNGX_DLSS_Vk.cpp
+++ b/OmniScaler/NVNGX_DLSS_Vk.cpp
@@ -204,7 +204,10 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_VULKAN_CreateFeature1(VkDevice InDevice
 	*OutHandle = deviceContext->Handle();
 
 	if (deviceContext->Init(vkInstance, vkPD, InDevice, InCmdList, vkGIPA, vkGDPA, InParameters))
+	{
+		Config::Instance()->ActiveFeatureCount++;
 		return NVSDK_NGX_Result_Success;
+	}
 
 	spdlog::error("NVSDK_NGX_VULKAN_CreateFeature1 CreateFeature failed");
 	return NVSDK_NGX_Result_FAIL_PlatformError;
@@ -232,6 +235,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_VULKAN_ReleaseFeature(NVSDK_NGX_Handle*
 		VkContexts.erase(it);
 	}
 
+	Config::Instance()->ActiveFeatureCount--;
+
 	return NVSDK_NGX_Result_Success;
 }
 
@@ -344,6 +349,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_VULKAN_Shutdown(void)
 	vkPD = nullptr;
 	vkDevice = nullptr;
 
+	Config::Instance()->ActiveFeatureCount = 0;
+
 	return NVSDK_NGX_Result_Success;
 }
 
diff --git a/OmniScaler/imgui/Imgui_Base.cpp b/OmniScaler/imgui/Imgui_Base.cpp
index fa64f03f..669cb490 100644
--- a/OmniScaler/imgui/Imgui_Base.cpp
+++ b/OmniScaler/imgui/Imgui_Base.cpp
@@ -144,9 +144,12 @@ extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg
 //Win32 message handler
 LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
+	if(Config::Instance()->ActiveFeatureCount == 0)
+		return CallWindowProc(_oWndProc, hWnd, msg, wParam, lParam);
+
 	ImGuiIO& io = ImGui::GetIO(); (void)io;
 
-	// CTRL + HOME
+	// HOME
 	if (msg == WM_KEYDOWN && wParam == VK_HOME) // && (GetKeyState(VK_SHIFT) & 0x8000))
 	{
 		_isVisible = !_isVisible;