Todd Howard asked on-air why Bethesda didn't optimise Starfield for PC: 'We did [...] you may need to upgrade your PC'

"fine" is subjective, I guess.
To me fine means above 60fps at all times.
I have an "UFO rated" computer on userbenchmark and it's rarely above 40fps. And the game is not even pretty. Not fine by my standards.

I'm playing with an R7 5700x and a 3060ti. NVMe SSD storage, 32gb RAM. Ultra settings at 1440p on an ultra wide monitor. I don't understand the fuss, it is completely playable for me. I guess my standards are just lower? I don't know. It's seriously fine. I try not to get wrapped up in actual numbers, I'm more concerned about how it looks and feels to my actual eyes. Not the prettiest game I've ever seen but it looks alright to me and it feels smooth to me.

They all wanna run it at 4k resolution.....

Haha yeah I'm on the same and its great! I did have issues when I didn't realize I installed on HDD, but once I moved the install to my SSD, no problems at all on 2070.