diff --git a/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.cpp b/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.cpp
index 8a04f454c6..cfbca35f65 100644
--- a/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.cpp
+++ b/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.cpp
@@ -238,6 +238,27 @@ unsigned int GetBackBufferHeight() { return yres; }
 
 bool BGRATexturesSupported() { return bgra_textures_supported; }
 
+// Returns the maximum width/height of a texture. This value only depends upon the feature level in DX11
+unsigned int GetMaxTextureSize()
+{
+	switch (featlevel)
+	{
+		case D3D_FEATURE_LEVEL_11_0:
+			return 16384;
+
+		case D3D_FEATURE_LEVEL_10_1:
+		case D3D_FEATURE_LEVEL_10_0:
+			return 8192;
+
+		case D3D_FEATURE_LEVEL_9_3:
+			return 4096;
+
+		case D3D_FEATURE_LEVEL_9_2:
+		case D3D_FEATURE_LEVEL_9_1:
+			return 2048;
+	}
+}
+
 void Reset()
 {
 	// release all back buffer references
diff --git a/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.h b/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.h
index efcd7c1438..c1a70c803f 100644
--- a/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.h
+++ b/Source/Plugins/Plugin_VideoDX11/Src/D3DBase.h
@@ -51,6 +51,8 @@ const char* PixelShaderVersionString();
 const char* VertexShaderVersionString();
 bool BGRATexturesSupported();
 
+unsigned int GetMaxTextureSize();
+
 // Ihis function will assign a name to the given resource.
 // The DirectX debug layer will make it easier to identify resources that way,
 // e.g. when listing up all resources who have unreleased references.
diff --git a/Source/Plugins/Plugin_VideoDX11/Src/GfxState.cpp b/Source/Plugins/Plugin_VideoDX11/Src/GfxState.cpp
index 218afd6c9f..8ce9d41255 100644
--- a/Source/Plugins/Plugin_VideoDX11/Src/GfxState.cpp
+++ b/Source/Plugins/Plugin_VideoDX11/Src/GfxState.cpp
@@ -311,7 +311,7 @@ template<typename T> AutoState<T>::AutoState(const T* object) : state(object)
 template<typename T> AutoState<T>::AutoState(const AutoState<T> &source)
 {
 	state = source.GetPtr();
-	((IUnknown*)state)->AddRef();
+	((T*)state)->AddRef();
 }
 
 template<typename T> AutoState<T>::~AutoState()
diff --git a/Source/Plugins/Plugin_VideoDX11/Src/Render.cpp b/Source/Plugins/Plugin_VideoDX11/Src/Render.cpp
index fd38ef53dd..1ab07b4130 100644
--- a/Source/Plugins/Plugin_VideoDX11/Src/Render.cpp
+++ b/Source/Plugins/Plugin_VideoDX11/Src/Render.cpp
@@ -700,6 +700,9 @@ void UpdateViewport()
 	// [3] = xorig + width/2 + 342
 	// [4] = yorig + height/2 + 342
 	// [5] = 16777215 * farz
+	const int old_fulltarget_w = s_Fulltarget_width;
+	const int old_fulltarget_h = s_Fulltarget_height;
+
 	int scissorXOff = bpmem.scissorOffset.x * 2;
 	int scissorYOff = bpmem.scissorOffset.y * 2;
 
@@ -739,6 +742,15 @@ void UpdateViewport()
 	}
 	if (sizeChanged)
 	{
+		// Make sure that the requested size is actually supported by the GFX driver
+		if (s_Fulltarget_width > (int)D3D::GetMaxTextureSize() || s_Fulltarget_height > (int)D3D::GetMaxTextureSize())
+		{
+			// Skip EFB recreation and viewport setting. Most likely cause glitches in this case, but prevents crashes at least
+			ERROR_LOG(VIDEO, "Tried to set a viewport which is too wide to emulate with Direct3D11. Requested EFB size is %dx%d\n", s_Fulltarget_width, s_Fulltarget_height);
+			s_Fulltarget_width = old_fulltarget_w;
+			s_Fulltarget_height = old_fulltarget_h;
+			return;
+		}
 		D3D::context->OMSetRenderTargets(1, &D3D::GetBackBuffer()->GetRTV(), NULL);
 		FBManager.Destroy();
 		FBManager.Create();
diff --git a/Source/Plugins/Plugin_VideoDX9/Src/FramebufferManager.cpp b/Source/Plugins/Plugin_VideoDX9/Src/FramebufferManager.cpp
index 4ea68869bc..cebcd00211 100644
--- a/Source/Plugins/Plugin_VideoDX9/Src/FramebufferManager.cpp
+++ b/Source/Plugins/Plugin_VideoDX9/Src/FramebufferManager.cpp
@@ -97,7 +97,7 @@ void FramebufferManager::Create()
 	{
 		hr = s_efb_color_texture->GetSurfaceLevel(0, &s_efb_color_surface);
 	}
-	CHECK(hr, "Create Color Texture (hr=%#x)", hr);
+	CHECK(hr, "Create Color Texture (size: %dx%d; hr=%#x)", target_width, target_height, hr);
 	hr = D3D::dev->CreateTexture(1, 1, 1, D3DUSAGE_RENDERTARGET, s_efb_color_surface_Format, 
 										  D3DPOOL_DEFAULT, &s_efb_colorRead_texture, NULL);
 	CHECK(hr, "Create Color Read Texture (hr=%#x)", hr);
@@ -128,7 +128,7 @@ void FramebufferManager::Create()
 			if (!FAILED(hr))
 				break;
 		}
-		CHECK(hr, "Depth Color Texture (hr=%#x)", hr);
+		CHECK(hr, "Depth Color Texture (size: %dx%d; hr=%#x)", target_width, target_height, hr);
 		// Get the Surface
 		if(s_efb_depth_texture)
 		{
diff --git a/Source/Plugins/Plugin_VideoDX9/Src/Render.cpp b/Source/Plugins/Plugin_VideoDX9/Src/Render.cpp
index ad8ccfc62e..65fd01aa52 100644
--- a/Source/Plugins/Plugin_VideoDX9/Src/Render.cpp
+++ b/Source/Plugins/Plugin_VideoDX9/Src/Render.cpp
@@ -823,6 +823,9 @@ void UpdateViewport()
 	// [3] = xorig + width/2 + 342
 	// [4] = yorig + height/2 + 342
 	// [5] = 16777215 * farz
+	const int old_fulltarget_w = s_Fulltarget_width;
+	const int old_fulltarget_h = s_Fulltarget_height;
+
 	int scissorXOff = bpmem.scissorOffset.x * 2;
 	int scissorYOff = bpmem.scissorOffset.y * 2;
 
@@ -877,6 +880,16 @@ void UpdateViewport()
 	}
 	if (sizeChanged)
 	{
+		D3DCAPS9 caps = D3D::GetCaps();
+		// Make sure that the requested size is actually supported by the GFX driver
+		if (s_Fulltarget_width > caps.MaxTextureWidth || s_Fulltarget_height > caps.MaxTextureHeight)
+		{
+			// Skip EFB recreation and viewport setting. Most likely cause glitches in this case, but prevents crashes at least
+			ERROR_LOG(VIDEO, "Tried to set a viewport which is too wide to emulate with Direct3D9. Requested EFB size is %dx%d\n", s_Fulltarget_width, s_Fulltarget_height);
+			s_Fulltarget_width = old_fulltarget_w;
+			s_Fulltarget_height = old_fulltarget_h;
+			return;
+		}
 		D3D::dev->SetRenderTarget(0, D3D::GetBackBufferSurface());
 		D3D::dev->SetDepthStencilSurface(D3D::GetBackBufferDepthSurface());
 		FBManager.Destroy();