Can you post a screen shot of the charts with and without the OpenGL option checked?
One issue I have seen is the fonts don't render properly on my hardware unless I first display the charts (at least once) without OpenGL selected, then I can change over to OpenGL selected.
Incorrect Font Rendering, when OpenGL is selected at program start-up.
Attachment 14484
Correct Font Rendering (after switching off OpenGL, re-displaying charts and then switching OpenGL back on again).
Attachment 14483
I'm still working on a fix for that font issue.
Regards
Paul