Fall back to OpenGL 1.1 by a "use_legacy_opengl" preferences switch. https://github.com/prusa3d/Slic3r/issues/233 https://github.com/prusa3d/Slic3r/issues/268 https://github.com/prusa3d/Slic3r/issues/619
The incompatible presets are hidden in the tabs if show_incompatible_presets is false. If show_incompatible_presets is true, there is a button to show / hide the incompatible presets from the tab selector.
