http://bugs.winehq.org/show_bug.cgi?id=32736
--- Comment #3 from GyB gyebro69@gmail.com 2013-01-17 08:14:04 CST --- (In reply to comment #2)
Fixing that line in game.ini in the main game directory and the user settings in My Games/King's Bounty Crossworlds addresses the issue indeed. Is it because KBC sets 3d mode enabled by default?
I haven't found much of anything on that particular option, it was introduced with KB:Crossworlds. Neither KB:The Legend nor KB:Armored Princess recognizes that option. If you have native Windows installed you should try the game with that option enabled to see what effect it has. Maybe some kind of animation is taking place in the menus (I don't have Windows installed so can't tell it for sure)