A friend of mine is trying to join me via RAF now that my server is no longer marked as congested, but he's encountering a problem that neither of us can figure out.

The game stops accepting his mouse and keyboard commands. It happens sometimes when he alt-tabs, but sometimes also on launching the game.

It also keeps registering a gamepad being plugged in, even though nothing but his mouse and keyboard were attached to his computer. Trying to disable the gamepad in-game just causes the game to no longer accept inputs from anything.

Editing the config file and changing PadMouseMode from 1 to 0 and then back to 1 again (booting in between) fixes the issue, but only temporarily. He seems to have to do it again every now and then. He also had to change PadAvailable from 1 to 0 in order to make it stop trying to use a controller.

I heard some talk about overlays causing this issue, but he's disabled the Discord and GeForce overlays and he's not playing through Steam.

Does anybody have any idea what is causing this?