Yea, it was something about wireless. I believe it affected 2.4 GHz and BT, was easily fixed with some udev rules though.

I have the BT version which worked great with the workaround, but it’s not needed anymore, at least on EndeavourOS (Arch)

You might have difficulty locating the documents folder on linux. It should be under /compatdata/292030/pfx/c_drive/users//documents (I just typed that off the top of my head, so it’s might not be exaclty that, but something similar, sorry)

Also I would recommend you run the game once, before copying stuff, sometimes games write files on first launch, which could mess with your settings

First, which game are you talking about? Does it need proton on linux, or does it run natively?

Definitely first install the game through steam on linux and then overwrite stuff.

You should be able to access your windows drive through linux. I would expect it to show up in your file manager automatically and ask for your linux root password when you try to access it.