Native 4k is tough still. a 2080ti Can't max out all games 4k 60fps.
It's why I went for 1440p 144hz. Maybe another 2/3 years we can start seeing 4k high refresh rate max settings on high fidelity games soon.
That's pretty much where I'm at, and likely will be for a few years more. 1440p 144hz is just too good of a sweet spot for me to pass up. I'll probably go for 4k, when 4k OLED monitors are cheap and do 144hz.