I'm running at 3440x1440 and the ultrawide support is good but not perfect. When the game transitions I get black bars at the sides for a second. "Cut scenes" are rendered with black bars on the top, bottom and sides. when driving it's fine.Running it @ Ultra in 2560x1080, its ultra wide support is perfect
The game is also immense at 120Hz
Wish I didn't have to have a goofy avatar, a racing suit would be fine.