Dead Island 2 has native ultrawide support for gameplay. Here's a fix to get ultrawide support for the cutscenes too, thanks to Lyall. : r/widescreengamingforum
How To Fix the Dead Island 2 Ultrawide Cutscenes Issue on PC
Dead Island 2 UltraWide 21:9 wallpapers or desktop backgrounds
3 Years with Ultrawide Display - Support Summary in 80 games I've played/tested
Dead Island Menu & HUD Fix - WSGF - PCGamingWiki PCGW Community
3 Years with Ultrawide Display - Support Summary in 80 games I've played/tested
Dead Island 2 First 60 Minutes PC Ultrawide Gameplay [3440 x 1440] - No Commentary
Technical FAQs
dead island 2 pc 1440p looks noisy blurry and ugly help PART 2 : r/ deadisland
Dead Island 2 Texture Loading issue on PC : r/deadisland