We've deployed our first update patch due to community feedback about the visual sharpness. We've upped the resolution settings for normal and high, as well as adding a new ultra setting.
Our original setting were to try and give people the best possible frame-rates even on lower end cards so we were clearly being a bit too conservative with the rendering resolution to ensure that.
Rendering resolutions are now: low - 75%, normal - 100%, high - 140%, ultra - 200%. In future patches we'll probably expose this setting more directly to users but for now we wanted to give you better resolutions immediately.