Yeah, planets in Elite: Horizons are very system-intensive, as are stations near those planets. And I think they improved graphics in stations altogether so those can have some stuttering where they didn't before. Even with a 980ti I have to drop a few settings down from Ultra to make it run smoothly when not in the middle of space.
I wonder if the VR experience will make up for whatever the difference in graphic detail is lost to run it that way. Kinda like driving a Ferrari with cloth seats instead of leather seats. Who cares it's still a Ferrari.