diff --git a/GlosSITarget/main.cpp b/GlosSITarget/main.cpp
index a5a28f7..1cef9ec 100644
--- a/GlosSITarget/main.cpp
+++ b/GlosSITarget/main.cpp
@@ -30,6 +30,11 @@ limitations under the License.
 
 #ifdef _WIN32
 
+// default to high performance GPU
+extern "C" __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
+extern "C" __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001;
+
+
 LONG Win32FaultHandler(struct _EXCEPTION_POINTERS* ExInfo)
 
 {