Okay so lets do this some benchmarks on my setup for you Ultra wide fans for all games below vsync is off frame rate is unlocked at 3440x1440p@100Hz.
will post the pics is Spoiler tags so the post doesn't appear long.
Batman Arkham Knight Benchmark Maxed Out No AA No Gameworks
Assassins Creed Syndicate Ultra Preset No AA
Was hovering between between 45-53 fps on average this is a really demanding game
Shadow Of Mordor Ultra Preset HD Textures Fully Maxed Out
Rise of The Tomb Raider Very High Preset Fully Maxed Out
GTA V Very High Settings AA = FXAA Advance Graphics Off