diff --git a/src/osgViewer/GraphicsWindowCocoa.mm b/src/osgViewer/GraphicsWindowCocoa.mm
index 5a3a54012..e93ebc4cd 100644
--- a/src/osgViewer/GraphicsWindowCocoa.mm
+++ b/src/osgViewer/GraphicsWindowCocoa.mm
@@ -1223,6 +1223,7 @@ bool GraphicsWindowCocoa::realizeImplementation()
     [_view setAutoresizingMask:  (NSViewWidthSizable | NSViewHeightSizable) ];
     [_view setGraphicsWindowCocoa: this];
     [_view setOpenGLContext:_context];
+    [_view setWantsBestResolutionOpenGLSurface: NO];
 
     // enable multitouch
     if (_multiTouchEnabled || (windowData && windowData->isMultiTouchEnabled()))
@@ -1305,7 +1306,6 @@ bool GraphicsWindowCocoa:: makeCurrentImplementation()
 {
     if (_updateContext)
     {
-        [_context update];
         _updateContext = false;
     }