OpenGl can be a blessing, but it also can be a curse. If it works, it speeds up screen redraw. If it works depends on many things as each configuration is different. Settings depend on your driver and on the options on your card. Example: Radeons for PC do not have dualplanes (only what has changed redraws. This has nothing to do with dual monitors!). This is reserved to FireGL cards. Smart screen redraw, shared textures, antialiased lines, line polygons etc...sometimes work, and sometimes crash the app. Best is to have newest drivers that are known not to be buggy. Example: objects may disappear and reappear, studio (workspace) may be flickering,... It can be a blessing though.

I have tried prudent planning long enough. From now I'll be mad. (Rumi)