So my main screen is 1600x1200, but I play using Steam Link to my TV which is 1920x1080. This is often not a problem because I launch my games windowed and change their aspect ration to 16:9, and then it streams just fine filling the whole screen.

HOWEVER in this game in particular, nothing I change in the ingame Settings affects the game. It is undone immediately as I live the settings screen. I can't change to windowed mode, I can't change the aspect ratio or... anything really.

I forced to launch it in Windowed mode with Steam, but it just goes into the unchangeable ingame 1600x1200....

How do I fix this? As anyone else also not being able to change the Settings?