When I switched I had to use Windows (gross) to make the boot disk. Turns out that was my mistake, Windows fucks with the drive just a tad and made the verification fail on the installer.

Using a live usb Linux stick I was able to download the ISO and write a new install disk. Worked flawlessly from there.

Linux gaming was always slightly buggy for me for a while. Then I tried Nobara, and since then everything has been more or less plug and play.

AC Odyssey was a bit more work to get going but that was because I had bought it through Ubisoft Connect. But even that just needed me to install it in Lutris which comes preinstalled and made the setup nice and easy.

Nobara is developed by the guy who makes ProtonGE, as a side note.

https://nobaraproject.org/