If you want to get a sharper super sampled image and smoother lines you can create a custom resolution for the rift display of 2650×1440 @75hz. In the nvidia control panel it’s under change resolution > customize > create custom resolution (not sure how for other cards) then edit the config file of the game to render at 2650×1440 or select it if available in game and launch it with the rift as primary display. Tested it for Skyrim, MW3 and Arma 2 with vorpx and it also works for those few games with native DK2 support like Elite Dangerous & live for speed. It also has the added benefit of bringing the menus more in view for some games.