I’ve been struggling with that for some time now.
The option “New Window Position” in the Editor settings (https://puu.sh/xy3MB/9828e028bb.png) doesn’t seem to work. It gets reset to the default (centered) position everytime I start the VR preview.
I’ve tried removing my Intermediate, Saved and Config folders as suggested by someone on the answerhub, but it still behaves the same…
Edit: Asking around, this seems to be a bug since it works fine for normal preview, so I changed the title accordingly.