I think I wasn't clear - it's not that gradual motion shifting that you get in 2D. That's definitely turned off in VR (and luckily so because it would mean instant motion sickness)
The effect I'm seeing is a sudden 'jump' in standard position. As if I was pressing the HMD recenter button except it happens automatically randomly. For example, if I happen to be looking to the left, the left is suddenly 'straight ahead' so if I turn my head forward I'm looking to the right. It's just immersion breaking, and it seems to be a bug or a break in the tracking or something.
But yeah I think the CV1 is totally worth it. Even though I didn't pay for it (I was an original kickstarter backer) but I would have ordered one and I would have been happy with it. Elite is really well made for it, the attention of detail in the cockpits is amazing. They're so much nicer in VR. For example: I don't like the Lakon cockpits in 2D due to the basic flat dashboard, but they are amazing in VR with the super wide view with glass everywhere. I also love the spaceport and planet detail. I noticed the planet textures are a bit low-res in 2D but because the Rift is lower in resolution itself you don't really notice this as much, which is really great. I think this is a big improvement point in the current beta anyway.
No that's definitely disabled!! Gradual motion shifts not initiated by the user are extremely sickening with the rift so it would not be playable if this hadn't been disabled.
The 'Jumps' I'm seeing are not so bad in terms of motion sickness but they are just a bit disconcerting. It breaks immersion (by realising you're not in this cool spaceship)
I have to say though that my system is a bit slow for the rift and it constantly reminds me that I'm not meeting specs (I have a GTX970 but my CPU is one generation older than the one they require). Perhaps that is the reason.
Glad to hear they turned it off in VR. Wish they would do it for Trackir also but that won't be an issue very soon. The gtx980 is what FD is recommending for ED so it might be your settings are a little high for your specs. It does seem curious that it's a re-centering issue. I assume you've tried repositioning your sensor or changed it's usb port. Can't offer much help as I am still awaiting my Kit but perhaps someone else will chime in with a solution.
Good luck