feat: ability to turn off vsync

Minecraft.Client/Common/Network/GameNetworkManager.cpp

@@ -37,6 +37,10 @@
 #include "..\..\Xbox\Network\NetworkPlayerXbox.h"
 #endif
 
+#ifdef _WINDOWS64
+#include "..\..\Windows64\Windows64_Minecraft.h"
+#endif
+
 #ifdef _DURANGO
 #include "..\Minecraft.World\DurangoStats.h"
 #endif
@@ -2032,7 +2036,11 @@ void CGameNetworkManager::ServerStoppedWait()
 			RenderManager.Tick();
 			ui.tick();
 			ui.render();
+#ifdef _WINDOWS64
+			RenderManager.Present(g_iScreenWidth, g_iScreenWidth);
+#else
 			RenderManager.Present();
+#endif
 		} while( result == WAIT_TIMEOUT );
 	}
 	else