Gaming PC - Dual boot Arch Linux and Windows 11. Arch for everything (literally) and Windows 11 for VR only. I even share the same Steam library between 2 OSes on separate SSD, formatted as btrfs.
Work laptop - Arch linux (because I can, we have strict managed-Windows system policy lol).
All of them using KDE.
You can use btrfs on Windows ? How is the performance ?