diff --git a/Common/DeviceResources.cpp b/Common/DeviceResources.cpp
index 02d89c8..8faa369 100644
--- a/Common/DeviceResources.cpp
+++ b/Common/DeviceResources.cpp
@@ -469,13 +469,14 @@ void DX::DeviceResources::UpdateRenderTargetSize()
 {
 	auto state = GetApplicationState();
 	m_effectiveDpi = m_dpi;
-	int compositionScaleMultiplier = 1;
+	double compositionScaleMultiplier = 1;
 
 	Windows::Graphics::Display::Core::HdmiDisplayInformation^ hdi = Windows::Graphics::Display::Core::HdmiDisplayInformation::GetForCurrentView();
 	// HDR Setup
 	if (hdi) {
 		auto mode = hdi->GetCurrentDisplayMode();
-		if (mode->ResolutionWidthInRawPixels > 1920)compositionScaleMultiplier = 2;
+		if (mode->ResolutionWidthInRawPixels > 2560)compositionScaleMultiplier = 2;
+		else if (mode->ResolutionWidthInRawPixels > 1920)compositionScaleMultiplier = 1.33333333;
 	}
 
 	m_effectiveCompositionScaleX = m_compositionScaleX * compositionScaleMultiplier;