This game is a current favourite of mine right now and I'm thinking of trying out some of these categories. What is up with the "Display Mode" option?

Edit: clarify, is there a difference in gameplay or tangible speed benefits in VR Mode?

I don't think the mode makes a difference, certainly not in Overhauled, but perhaps also in Simulator. The categories are there simply for the sake of notating them. Now that simulator is here, I will be revisiting the categories once I know more about VR mode and how the difficulty levels affect VR and flatscreen.