You've entered the seventh circle of hell. First of all, experience is subjective. Some people love a fuzzy 30 frames per second. So you can't really rely on what people think good performance is.
Second: Elite: Dangerous VR has so many places where you can make a mess.
But when it works, nothing beats it. So don't give up.
I editet my initial post with a second link. Check this out also.
You'll be messing with settings in-game, in SteamVR and in Windows Mixed Reality. And they all compound and affect each other. It's a hot mess.
So now for some good news. You have the hardware to get a good experience. You just have to ignore all the "old" advice regarding older headsets, where super sampling was all the rage, because old headsets had low native resolution. This is a non-issue for you.
Start of with low/default settings in all the aforementioned apps. Install fpsVR from Steam to monitor you actual performance. You should be aiming for 90 frames per second with little or no reprojection and gpu frametime. But performance in/near starports, in RES and near planet surfaces will dip heavily, so be prepared to accept 60 fps at these locations.
Slowly work up the in-game settings. Medium settings are more than enough to make EliteVR look gorgeous. Shadows are very important, but are also a heavy load, so take them as high as you can tolerate.
So. Establish a baseline, and methodically work up from there. Be prepared for frustration and confusion. Return to these forums for support and good advice.
Good luck Commander.
Edit: Ignore the in-game VR presets. They are 10 years old and are all over the place.