Yeah. It's not just alt-tabbing, merely losing focus. I've a second monitor where I run discord (and lots of other shit), so if I even focus on it for a second

Yeah. It's not just alt-tabbing, merely losing focus. I've a second monitor where I run discord (and lots of other shit), so if I even focus on it for a second: the game is dead. Generally, you can work around this by configuring wine to use a virtual desktop. The game never picks up its focus-loss.