Had the same issue and managed to find the setting that disables this abomination.Yeah sorry, I found it since, I don't know how I didn't see it before either...
Makes a big difference, I can run the game on 'VR Ultra' with HMDQ at 1.5, just need to drop it on planets. Only problem is I'm still getting the freezes / SteamVR loading screen popups during FSD jumps, is this normal, it seems like it's when the game is loading the next system or something? I can't seem to get rid of it, even putting the settings down to low doesn't seem to affect it.
Oh yeah! Found that myself yesterday tooHad the same issue and managed to find the setting that disables this abomination.
Load SteamVR. Click the top-left menu button on the small "Now Playing" SteamVR window that opens.
Go to Settings>Developer>Check "Do not fade to grid when app hangs"
This will stop the annoying "SteamVR" loading nonsense when jumping to new systems etc.