I'm having an issue with some of my users on XP systems. They were experiencing high CPU usage and on further investigation we found out that they were defaulting to Microsoft's GDI renderer. I had them update to the latest official drivers (nvidia) which I knew supported openGL 3.3.
Unfortunately, thats not fixing the problem. Using the OpenGL extension viewer (http://www.realtech-vr.com/glview/) it shows two renderers installed, GDI Renderer and the hardware accelerated Nvidia one. Why does OpenTK default to using the GDI renderer (i'm assuming its not an openTK flaw since all it does is call opengl32.dll) and what steps can we tell users who have this problem?