..I dunno, if you spend £1400 on a 3090, seems dumb to run at anything less than 'Ultra'...otherwise, why did you bother spending such an absurd amount.
You can buy the most expensive graphics card in the world and still know that enabling X setting has a FPS hit which sucks.
But what does that matter, the game devs aren't selling you graphics sliders and never guarantee that everything turned on at once is a good idea.
The point is to have performance which doesn't distract from the game right?