Desktop: Fedora Laptop: Arch
Both use KDE, though I've also played around with i3/sway/hyprland on my laptop.
I used to have Windows on a separate partition, then on a separate hard drive... Once I realized I hadn't booted into it in months I got rid of it completely and haven't looked back.
Gaming was one of my last tethers and it's gotten so good in recent years that at most I only need to do some minor setup and tweaking, if that. Proton ,Vulkan, and DXVK have really made it all possible.