Has the game had a large update in the last 6 weeks or so? Some nebula seem missing and small things appear different?
Anyway, Left Steam settings on default, Elite chose "high" settings with the 3090 but I turned off the usual DoF, lowered shadows and bloom to medium. Everything in space feels much more smoother than before. Stations still do that weird judder as you enter them but nowhere near as bad.
I'm parked up at Titans daughter. I'll put the FPS monitor on and go for a spin around some asteroids in a mo.