It isn't as bad now, I had a look at it last night after John's comments in the DF weekly.
Performance has improved greatly with all the patches, so much so that the game just runs mostly at 120fps so VRR becomes less useful.
During gameplay I couldn't see any judder when the framerate was dropping to about 110fps so I presumed it has been fixed, but it hasn't .
If you stand very high up and look over a large expanse normally with water in you can more easily drop the framerate to about 110fps, then if you stand still and move the camera slowly you can see some judder, move the camera fast and it's incredibly difficult to spot.
So on Series X I would say 120fps is a go as noticing it in gameplay is very very difficult.