Hopefully this isn't the sign of things to come for them throughout the generation, and the difference in rendering will be as big as the leaps they've made in the past between first and second iteration on a new platform.As I investigated further, at later frame the car seems to come back to the 4K status. It doesn't have RT yet, maybe they got the dev kits pretty late. DF said that it get down to 1800p to help keep it at 60fps, few dips in fps but nearly at 60fps most of the time for the 4K quality time. It's referred to as "Dynamic" 4K, seems to be the case with most of the demanding games.
With them being UK based and this market being one of Xbox's main gets they are potentially at risk of being too aligned to Xbox to be able to push their multiplatform offerings in different ways between the two consoles too much, and if XsS and XsX are pushing this fidelity for that resolution and frame-rate, I'm not too hopeful the PS5 version of this will be enhanced beyond loading times. Until now, rally has always seemed like a game that preloads most of its data before hand, rather than streaming, and that certainly won't be helping rendering quality if total asset fidelity is capped at the 10GBs for XsX.