I reported this 1 YEAR ago and it's still not fixed. Why Assassin's Creed Syndicate and Assassin's Creed Unity are stretched on 16:9 resolutions? They correctly with 16:10 but that means that
Assassin's Creed Unity - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
Assassin's Creed: Unity Resolution Test Intel HD Graphics 4000 - YouTube
Assassin's Creed Unity - Graphics settings and ShadowPlay - YouTube