I had the unlimited plan for a few months but downgraded only to the mail plan, that way I can try different providers for VPN, Drive, and password manager.

For password manager I’ve had Bitwarden for years now and it works great for me. VPN currently with AirVPN because of easy port forwarding, and drive with Nextcloud self hosted because I can, and also works fine for me.

On KDE there’s System Monitor, which you can customize to show graphs for CPU usage and temp, among other things, and GPU usage and temp too.

For in-game monitoring there’s Mangohud, also very customizable on what you can show in the overlay

Regarding your bluetooth issues on your 8bitdo, I had an issue with my 8bitdo pro 2 where on linux there was a higher input delay vs Windows. I then updated the controller firmware and that fixed it. Works great on linux now.

Maybe try updating the controller’s firmware, if you haven’t yet anyway.

Regarding dual booting, I do dual boot, sometimes I like using windows, others i like using linux. It’s nice to have the flexibility. Ideally i would like to switch to linux one day, but there are still a few small issues, at least on KDE wayland.