So did a few hour stream yesterday and tried to figure out how to solve the keybindings issue during that.
Basically what I've found that my mouse wasn't detected as a device called mouse but instead it's ID was: 3ED89E57
Keyboard was detected as 648A0AB8 (My Steam Controller was 28DE1142).
I was never able to fix keyboard or make the steam controller work, even when I used a custom keybinding file with stuff saved the game just can't find the keys on the keyboard since it detects them in game as the 'weird symbol characters'.
Also everytime you enter the 'keybindings' setup (or restart the game) the specific keybinding setup you set will be gone..and you have to setup everything again. It's a mess. But it works.. just.. I have to setup the entire thing each time I wanna play.
Oh, since I used a keyboard&mouse config and changed the Mouse to the specific ID of it, mouse does work perfectly. Only mouse, everything else is this mess of a thing [big grin]
Oh and I only tested it during the training missions, but the performance is great! Running it on a Ryzen 5 1600 & rx 560 (which is really a budget gpu)
(archive of the stream
https://www.twitch.tv/videos/325293835)