Resident Evil 7 is a great looking game, but the lack of 21:9 aspect ratio support for UltraWide monitor games is disappointing - but will the game ever support UltraWide resolutions? It seems not, according to Capcom - the developer of the game said: "There are currently no plans to support wide aspect ratio monitors".
Capcom also talked about the reasoning behind the 90-degree FOV lock, as there is an artistic and technical reason behind it, with Capcom explaining: "FOV capped at 90 degrees is a game design decision". They continued: "The dev team explored potentially going wider after seeing feedback from the demo, but going wider introduces issues where certain objects, textures, etc. are then not fully rendered out for performance considerations. It will also have performance implications since going wider will introduce more objects into the scenery. Having too much peripheral vision for this type of game can also lessen the tension and atmosphere intended for the game".
From the way I'm taking this news, we won't have 21:9 aspect ratio support because of the artistic feel - which I think would be fine, but the performance reasons aren't strong enough for me. 3440x1440 is easier on your graphics card to render than 4K (3840x2160) - and even if it were 'too much', they could just warn people they would need a better graphics card.