I have Oculus Rift and just got it a couple days ago. I've played ED the last couple days with it and besides a couple of "flaws" (that probably will be fixed in updates), the game is still a wonder to behold and adds a whole new level to gaming.
However, the 560 will not be enough for the OR, especially in an asteroid belt. I have a GTX 765 and I run smooth without OR on high settings, but major judder in asteroid belts with OR (have to reduce resolution to get "some" smoothness back).
My growing pains:
1. ED will run in direct mode (it did for me at least), but I couldn't get it to give me anything higher than 35-40 fps when in this mode (you need smooth 75 fps to get ride of judder).
2. Use Extended mode for more FPS. In your screen resolution in Windows, set your Rift to Primary (or Secondary... I've really not seen any difference here) screen. You might have to set the screen to rotated and flipped (I had to).
3. When in ED, go to Options and set your Screen to Secondary (or whatever screen your OR is) -- your OR should now have the game in it.
4. Enter the game, go somewhere with a lot of activity. Do you have judder? Close game.
5. If so, try these things to reduce it.
6. Go into Nvidia Control Panel and 3D Settings (I just did a Restore to default here too). Make sure in your global settings you have V-sync set to Adaptive. (Other people have to do other things here, but this worked best for me).
7. Go back into game. Still have judder?
8. If so, turn off Blur (that was a big one for me), lower or turn off Shadows, lower or turn off Bloom, lower or turn off Ambient Occulsion, turn off Anti-Aliasing (or try SMAA -- I see no difference, but people said it helps).
9. Go back into game. Still have judder?
10. Begin lowering other settings BESIDES the Oculus Rift resolution (it's a slider bar toward the bottom and should be all the way to the right)... only do that as a last resort as this will lower the resolution rendered in the actual headset and makes reading fonts completely unbearable.
Side note is that I'm still tweaking to make it as smooth as possible, so these are just a few things I did to help reduce judder. Hopefully with Gamma 2.0 (releasing today) and by full version on the 16th, we'll have more fixes and tweaks to make the experience even better.
Hope that helps.