Not the person you asked, but I run Kubuntu with an RTX 4080 and a 4K 144hz display and every single thing works out of the box. Not every game I want to play works with Proton, but close. Gaming performance vs Windows has been indistinguishable, and it boots up much faster. My Windows drive sits at a half-loaded desktop with no icons for like a minute... No idea why.
Dual monitors will work well if they're similar, but I wouldn't mix hi-dpi with low-dpi or different refresh rates. I've heard most of that doesn't work or is poorly supported.
Dual monitors will work well if they're similar, but I wouldn't mix hi-dpi with low-dpi or different refresh rates. I've heard most of that doesn't work or is poorly supported.