diff --git a/renderdoc/driver/d3d12/d3d12_debug.cpp b/renderdoc/driver/d3d12/d3d12_debug.cpp
index 4d3db433d..8a69c4081 100644
--- a/renderdoc/driver/d3d12/d3d12_debug.cpp
+++ b/renderdoc/driver/d3d12/d3d12_debug.cpp
@@ -335,6 +335,8 @@ void D3D12DebugManager::ClearOutputWindowColour(uint64_t id, float col[4])
 
   ID3D12CommandList *list = (ID3D12CommandList *)m_WrappedDevice->GetList();
   m_WrappedDevice->GetQueue()->GetReal()->ExecuteCommandLists(1, &list);
+
+  m_WrappedDevice->GPUSync();
 }
 
 void D3D12DebugManager::ClearOutputWindowDepth(uint64_t id, float depth, uint8_t stencil)
@@ -352,6 +354,8 @@ void D3D12DebugManager::ClearOutputWindowDepth(uint64_t id, float depth, uint8_t
 
   ID3D12CommandList *list = (ID3D12CommandList *)m_WrappedDevice->GetList();
   m_WrappedDevice->GetQueue()->GetReal()->ExecuteCommandLists(1, &list);
+
+  m_WrappedDevice->GPUSync();
 }
 
 void D3D12DebugManager::BindOutputWindow(uint64_t id, bool depth)
@@ -422,6 +426,8 @@ void D3D12DebugManager::FlipOutputWindow(uint64_t id)
   ID3D12CommandList *list = (ID3D12CommandList *)m_WrappedDevice->GetList();
   m_WrappedDevice->GetQueue()->GetReal()->ExecuteCommandLists(1, &list);
 
+  m_WrappedDevice->GPUSync();
+
   outw.swap->Present(0, 0);
 
   outw.bbIdx++;